Categoria per defecte en Matemàtiques - 4t dESO/Equacions/Eq. primer grau/Equacions de primer grau equació amb den.calc Calcula la solució de l'equació següent:

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

]]> 1 0.1 0 0 (-{d1}*{d2}*{d3}*{n4})/(-{d2}*{d3}*{n1}-{d1}*{d3}*{n2}+{d1}*{d2}*{n3}) 0.01 1 1 2 private d1 calculated uniform 2 15 0 20 1 2 2 4 3 7 4 9 5 7 6 7 7 8 8 3 9 7 10 14 11 14 12 12 13 7 14 11 15 14 16 3 17 3 18 3 19 10 20 6 20 private d2 calculated uniform 2 15 0 20 1 3 2 6 3 15 4 12 5 12 6 2 7 11 8 11 9 10 10 6 11 8 12 2 13 13 14 4 15 6 16 6 17 4 18 14 19 2 20 6 20 private d3 calculated uniform 2 15 0 20 1 5 2 8 3 10 4 12 5 13 6 10 7 11 8 9 9 6 10 4 11 12 12 9 13 14 14 5 15 4 16 5 17 9 18 12 19 8 20 7 20 private n4 calculated uniform 2 15 0 20 1 3 2 13 3 13 4 14 5 9 6 10 7 8 8 8 9 4 10 10 11 12 12 5 13 10 14 5 15 4 16 5 17 9 18 6 19 9 20 11 20 private n1 calculated uniform -15 15 0 20 1 4 2 -13 3 -1 4 1 5 7 6 -13 7 1 8 13 9 -3 10 -5 11 6 12 11 13 11 14 -14 15 1 16 -6 17 10 18 8 19 -15 20 4 20 private n2 calculated uniform -15 15 0 20 1 5 2 -2 3 11 4 -7 5 -13 6 7 7 -2 8 2 9 -14 10 1 11 -1 12 -12 13 -13 14 8 15 9 16 -7 17 11 18 -8 19 -6 20 -2 20 private n3 calculated uniform -15 15 0 20 1 -3 2 -2 3 -4 4 13 5 -1 6 4 7 -1 8 -6 9 8 10 1 11 -7 12 14 13 8 14 -14 15 -10 16 -5 17 -14 18 6 19 15 20 6 20 equació amb den.calc Calcula la solució de l'equació següent:

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

$$\frac{{n1}x}{{d1}}+\frac{{n2}x}{{d2}}=\frac{{n3}x}{{d3}}+{n4}$$

(Recorda, POSA NOMES EL VALOR COM A RESPOSTA, NO POSAR el x=__)

DONA EL RESULTAT AMB 2 DECIMALS.

]]> 1 0.1 0 0 (-{d1}*{d2}*{d3}*{n4})/(-{d2}*{d3}*{n1}-{d1}*{d3}*{n2}+{d1}*{d2}*{n3}) 0.01 1 1 1 private d1 calculated uniform 2 15 0 20 1 2 2 4 3 7 4 9 5 7 6 7 7 8 8 3 9 7 10 14 11 14 12 12 13 7 14 11 15 14 16 3 17 3 18 3 19 10 20 6 20 private d2 calculated uniform 2 15 0 20 1 3 2 6 3 15 4 12 5 12 6 2 7 11 8 11 9 10 10 6 11 8 12 2 13 13 14 4 15 6 16 6 17 4 18 14 19 2 20 6 20 private d3 calculated uniform 2 15 0 20 1 5 2 8 3 10 4 12 5 13 6 10 7 11 8 9 9 6 10 4 11 12 12 9 13 14 14 5 15 4 16 5 17 9 18 12 19 8 20 7 20 private n4 calculated uniform 2 15 0 20 1 3 2 13 3 13 4 14 5 9 6 10 7 8 8 8 9 4 10 10 11 12 12 5 13 10 14 5 15 4 16 5 17 9 18 6 19 9 20 11 20 private n1 calculated uniform -15 15 0 20 1 4 2 -13 3 -1 4 1 5 7 6 -13 7 1 8 13 9 -3 10 -5 11 6 12 11 13 11 14 -14 15 1 16 -6 17 10 18 8 19 -15 20 4 20 private n2 calculated uniform -15 15 0 20 1 5 2 -2 3 11 4 -7 5 -13 6 7 7 -2 8 2 9 -14 10 1 11 -1 12 -12 13 -13 14 8 15 9 16 -7 17 11 18 -8 19 -6 20 -2 20 private n3 calculated uniform -15 15 0 20 1 -3 2 -2 3 -4 4 13 5 -1 6 4 7 -1 8 -6 9 8 10 1 11 -7 12 14 13 8 14 -14 15 -10 16 -5 17 -14 18 6 19 15 20 6 20 Categoria per defecte en Matemàtiques - 4t dESO/Equacions/Eq. primer grau/Equacions de primer grau/Equacions amb paréntesis $$ -12 \left( -22 + 2 x \right) + 2 \left( -22 + 2 x \right) = -5 \left( 2 x - 20 \right) $$ $$ -12 \left( -22 + 2 x \right) + 2 \left( -22 + 2 x \right) = -5 \left( 2 x - 20 \right) $$ 1 0.1 0 0 0 12 $$ -2 \left( -2 x + 24 \right) = 4 \left( -21 + 2 x \right) $$ $$ -2 \left( -2 x + 24 \right) = 4 \left( -21 + 2 x \right) $$ 1 0.1 0 0 0 9 $$ -2 \left( -3 x - 17 \right) + 9 \left( 11 x + 20 \right) = -2 \left( -7 x - 16 \right) $$ $$ -2 \left( -3 x - 17 \right) + 9 \left( 11 x + 20 \right) = -2 \left( -7 x - 16 \right) $$ 1 0.1 0 0 0 -2 $$ -2 \left( 17 + 6 x \right) = 2 \left( 3 x + 19 \right) $$ $$ -2 \left( 17 + 6 x \right) = 2 \left( 3 x + 19 \right) $$ 1 0.1 0 0 0 -4 $$ -2 \left( 2 + 5 x \right) + 2 \left( -24 x - 19 \right) = -8 \left( 3 + 5 x \right) $$ $$ -2 \left( 2 + 5 x \right) + 2 \left( -24 x - 19 \right) = -8 \left( 3 + 5 x \right) $$ 1 0.1 0 0 0 -1 $$ -2 \left( 20 - 2 x \right) + 2 \left( -16 + 2 x \right) = 8 \left( -20 + 2 x \right) $$ $$ -2 \left( 20 - 2 x \right) + 2 \left( -16 + 2 x \right) = 8 \left( -20 + 2 x \right) $$ 1 0.1 0 0 0 11 $$ -3 \left( -11 + 4 x \right) = -3 \left( -15 + 5 x \right) $$ $$ -3 \left( -11 + 4 x \right) = -3 \left( -15 + 5 x \right) $$ 1 0.1 0 0 0 4 $$ -3 \left( -16 - 2 x \right) - 4 \left( 2 x + 19 \right) = 3 \left( -24 - 2 x \right) $$ $$ -3 \left( -16 - 2 x \right) - 4 \left( 2 x + 19 \right) = 3 \left( -24 - 2 x \right) $$ 1 0.1 0 0 0 -11 $$ -3 \left( 12 - 2 x \right) - 5 \left( -17 + 2 x \right) = 3 \left( -17 + 2 x \right) $$ $$ -3 \left( 12 - 2 x \right) - 5 \left( -17 + 2 x \right) = 3 \left( -17 + 2 x \right) $$ 1 0.1 0 0 0 10 $$ -3 \left( 15 + 2 x \right) = -3 \left( -2 x - 21 \right) $$ $$ -3 \left( 15 + 2 x \right) = -3 \left( -2 x - 21 \right) $$ 1 0.1 0 0 0 -9 $$ -3 \left( 16 + 2 x \right) - 9 \left( -23 - 3 x \right) = -6 \left( 19 + 3 x \right) $$ $$ -3 \left( 16 + 2 x \right) - 9 \left( -23 - 3 x \right) = -6 \left( 19 + 3 x \right) $$ 1 0.1 0 0 0 -7 $$ -3 \left( 18 - 2 x \right) - 3 \left( -15 + 2 x \right) = 3 \left( -2 x + 9 \right) $$ $$ -3 \left( 18 - 2 x \right) - 3 \left( -15 + 2 x \right) = 3 \left( -2 x + 9 \right) $$ 1 0.1 0 0 0 6 $$ -3 \left( 18 + 4 x \right) + 8 \left( -2 x - 13 \right) = -3 \left( -2 x - 4 \right) $$ $$ -3 \left( 18 + 4 x \right) + 8 \left( -2 x - 13 \right) = -3 \left( -2 x - 4 \right) $$ 1 0.1 0 0 0 -5 $$ -3 \left( 2 x - 16 \right) + 2 \left( 13 - 2 x \right) = 2 \left( -2 x + 10 \right) $$ $$ -3 \left( 2 x - 16 \right) + 2 \left( 13 - 2 x \right) = 2 \left( -2 x + 10 \right) $$ 1 0.1 0 0 0 9 $$ -3 \left( 2 x + 13 \right) = 7 \left( 2 x + 23 \right) $$ $$ -3 \left( 2 x + 13 \right) = 7 \left( 2 x + 23 \right) $$ 1 0.1 0 0 0 -10 $$ -3 \left( 2 x + 24 \right) - 2 \left( 17 + 2 x \right) = 2 \left( -2 x - 23 \right) $$ $$ -3 \left( 2 x + 24 \right) - 2 \left( 17 + 2 x \right) = 2 \left( -2 x - 23 \right) $$ 1 0.1 0 0 0 -10 $$ -3 \left( 22 - 5 x \right) = 3 \left( -17 + 4 x \right) $$ $$ -3 \left( 22 - 5 x \right) = 3 \left( -17 + 4 x \right) $$ 1 0.1 0 0 0 5 $$ -4 \left( -19 - 2 x \right) - 2 \left( 13 + 2 x \right) = -3 \left( 2 x + 10 \right) $$ $$ -4 \left( -19 - 2 x \right) - 2 \left( 13 + 2 x \right) = -3 \left( 2 x + 10 \right) $$ 1 0.1 0 0 0 -8 $$ -4 \left( 16 + 2 x \right) - 5 \left( -2 x - 20 \right) = -6 \left( 2 x + 15 \right) $$ $$ -4 \left( 16 + 2 x \right) - 5 \left( -2 x - 20 \right) = -6 \left( 2 x + 15 \right) $$ 1 0.1 0 0 0 -9 $$ -4 \left( 7 - 5 x \right) - 2 \left( 3 - 11 x \right) = -2 \left( -5 x + 1 \right) $$ $$ -4 \left( 7 - 5 x \right) - 2 \left( 3 - 11 x \right) = -2 \left( -5 x + 1 \right) $$ 1 0.1 0 0 0 1 $$ -5 \left( -3 x - 13 \right) = -2 \left( -2 x - 5 \right) $$ $$ -5 \left( -3 x - 13 \right) = -2 \left( -2 x - 5 \right) $$ 1 0.1 0 0 0 -5 $$ -5 \left( -4 x - 21 \right) = -3 \left( -13 - 3 x \right) $$ $$ -5 \left( -4 x - 21 \right) = -3 \left( -13 - 3 x \right) $$ 1 0.1 0 0 0 -6 $$ -6 \left( -12 + 2 x \right) = -2 \left( -15 + 3 x \right) $$ $$ -6 \left( -12 + 2 x \right) = -2 \left( -15 + 3 x \right) $$ 1 0.1 0 0 0 7 $$ -6 \left( -24 - 2 x \right) = 4 \left( -2 x - 19 \right) $$ $$ -6 \left( -24 - 2 x \right) = 4 \left( -2 x - 19 \right) $$ 1 0.1 0 0 0 -11 $$ -6 \left( -9 x - 5 \right) = 6 \left( 22 x + 18 \right) $$ $$ -6 \left( -9 x - 5 \right) = 6 \left( 22 x + 18 \right) $$ 1 0.1 0 0 0 -1 $$ -7 \left( -2 x - 12 \right) = -7 \left( 2 x + 16 \right) $$ $$ -7 \left( -2 x - 12 \right) = -7 \left( 2 x + 16 \right) $$ 1 0.1 0 0 0 -7 $$ -7 \left( -24 + 2 x \right) = 7 \left( -20 + 2 x \right) $$ $$ -7 \left( -24 + 2 x \right) = 7 \left( -20 + 2 x \right) $$ 1 0.1 0 0 0 11 $$ 11 \left( 18 - 2 x \right) + 7 \left( 22 - 3 x \right) = 4 \left( -2 x + 18 \right) $$ $$ 11 \left( 18 - 2 x \right) + 7 \left( 22 - 3 x \right) = 4 \left( -2 x + 18 \right) $$ 1 0.1 0 0 0 8 $$ 2 \left( -2 x + 21 \right) + 2 \left( 3 x - 19 \right) = -9 \left( -16 + 2 x \right) $$ $$ 2 \left( -2 x + 21 \right) + 2 \left( 3 x - 19 \right) = -9 \left( -16 + 2 x \right) $$ 1 0.1 0 0 0 7 $$ 2 \left( -20 - 2 x \right) - 11 \left( -2 x - 22 \right) = -2 \left( -17 - 2 x \right) $$ $$ 2 \left( -20 - 2 x \right) - 11 \left( -2 x - 22 \right) = -2 \left( -17 - 2 x \right) $$ 1 0.1 0 0 0 -12 $$ 2 \left( -7 + 6 x \right) = -11 \left( 6 x - 20 \right) $$ $$ 2 \left( -7 + 6 x \right) = -11 \left( 6 x - 20 \right) $$ 1 0.1 0 0 0 3 $$ 2 \left( -8 + 2 x \right) = -8 \left( 17 - 2 x \right) $$ $$ 2 \left( -8 + 2 x \right) = -8 \left( 17 - 2 x \right) $$ 1 0.1 0 0 0 10 $$ 2 \left( -8 x + 21 \right) = -2 \left( 10 x - 25 \right) $$ $$ 2 \left( -8 x + 21 \right) = -2 \left( 10 x - 25 \right) $$ 1 0.1 0 0 0 2 $$ 2 \left( 14 - 2 x \right) = 2 \left( -3 x + 22 \right) $$ $$ 2 \left( 14 - 2 x \right) = 2 \left( -3 x + 22 \right) $$ 1 0.1 0 0 0 8 $$ 2 \left( 15 - 2 x \right) = 9 \left( -2 x + 22 \right) $$ $$ 2 \left( 15 - 2 x \right) = 9 \left( -2 x + 22 \right) $$ 1 0.1 0 0 0 12 $$ 2 \left( 18 + 10 x \right) = -2 \left( -5 x - 8 \right) $$ $$ 2 \left( 18 + 10 x \right) = -2 \left( -5 x - 8 \right) $$ 1 0.1 0 0 0 -2 $$ 2 \left( 2 x + 13 \right) = 11 \left( 2 x + 22 \right) $$ $$ 2 \left( 2 x + 13 \right) = 11 \left( 2 x + 22 \right) $$ 1 0.1 0 0 0 -12 $$ 3 \left( 10 - 4 x \right) - 4 \left( 4 x - 17 \right) = 2 \left( 7 x - 14 \right) $$ $$ 3 \left( 10 - 4 x \right) - 4 \left( 4 x - 17 \right) = 2 \left( 7 x - 14 \right) $$ 1 0.1 0 0 0 3 $$ 3 \left( 12 - 5 x \right) - 2 \left( -4 x - 1 \right) = 3 \left( -6 x + 20 \right) $$ $$ 3 \left( 12 - 5 x \right) - 2 \left( -4 x - 1 \right) = 3 \left( -6 x + 20 \right) $$ 1 0.1 0 0 0 2 $$ 3 \left( 18 - 25 x \right) = 3 \left( -17 + 10 x \right) $$ $$ 3 \left( 18 - 25 x \right) = 3 \left( -17 + 10 x \right) $$ 1 0.1 0 0 0 1 $$ 4 \left( 14 - 3 x \right) = -4 \left( -2 x + 16 \right) $$ $$ 4 \left( 14 - 3 x \right) = -4 \left( -2 x + 16 \right) $$ 1 0.1 0 0 0 6 $$ 4 \left( 25 + 5 x \right) - 4 \left( -6 x - 20 \right) = -2 \left( 14 + 4 x \right) $$ $$ 4 \left( 25 + 5 x \right) - 4 \left( -6 x - 20 \right) = -2 \left( 14 + 4 x \right) $$ 1 0.1 0 0 0 -4 $$ 5 \left( 2 x + 11 \right) = -5 \left( -14 - 3 x \right) $$ $$ 5 \left( 2 x + 11 \right) = -5 \left( -14 - 3 x \right) $$ 1 0.1 0 0 0 -3 $$ 7 \left( -2 x - 19 \right) = -7 \left( -21 - 3 x \right) $$ $$ 7 \left( -2 x - 19 \right) = -7 \left( -21 - 3 x \right) $$ 1 0.1 0 0 0 -8 Categoria per defecte en Matemàtiques - 4t dESO/Equacions/Eq. primer grau/Equacions de primer grau/Equacions del tipus (3x+1)//15=2 $$ \frac{-11 - 5 x } {-22} = 3 $$ $$ \frac{-11 - 5 x } {-22} = 3 $$ 1 0.1 0 0 0 11 $$ \frac{-11 + 3 x } {5} = 14 $$ $$ \frac{-11 + 3 x } {5} = 14 $$ 1 0.1 0 0 0 27 $$ \frac{-12 + 28 x } {-8} = -9 $$ $$ \frac{-12 + 28 x } {-8} = -9 $$ 1 0.1 0 0 0 3 $$ \frac{-12 x + 8} {-2} = 32 $$ $$ \frac{-12 x + 8} {-2} = 32 $$ 1 0.1 0 0 0 6 $$ \frac{-13 + 2 x } {3} = -23 $$ $$ \frac{-13 + 2 x } {3} = -23 $$ 1 0.1 0 0 0 -28 $$ \frac{-14 + 2 x } {2} = 41 $$ $$ \frac{-14 + 2 x } {2} = 41 $$ 1 0.1 0 0 0 48 $$ \frac{-16 - 3 x } {-2} = -22 $$ $$ \frac{-16 - 3 x } {-2} = -22 $$ 1 0.1 0 0 0 -20 $$ \frac{-18 - 3 x } {-2} = 48 $$ $$ \frac{-18 - 3 x } {-2} = 48 $$ 1 0.1 0 0 0 26 $$ \frac{-19 x - 8} {-29} = -3 $$ $$ \frac{-19 x - 8} {-29} = -3 $$ 1 0.1 0 0 0 -5 $$ \frac{-2 x - 15} {5} = -19 $$ $$ \frac{-2 x - 15} {5} = -19 $$ 1 0.1 0 0 0 40 $$ \frac{-2 x - 29} {3} = -23 $$ $$ \frac{-2 x - 29} {3} = -23 $$ 1 0.1 0 0 0 20 $$ \frac{-2 x - 42} {-2} = -26 $$ $$ \frac{-2 x - 42} {-2} = -26 $$ 1 0.1 0 0 0 -47 $$ \frac{-2 x - 52} {4} = 9 $$ $$ \frac{-2 x - 52} {4} = 9 $$ 1 0.1 0 0 0 -44 $$ \frac{-2 x - 6} {-2} = -45 $$ $$ \frac{-2 x - 6} {-2} = -45 $$ 1 0.1 0 0 0 -48 $$ \frac{-2 x + 20} {3} = 32 $$ $$ \frac{-2 x + 20} {3} = 32 $$ 1 0.1 0 0 0 -38 $$ \frac{-2 x + 30} {-2} = -50 $$ $$ \frac{-2 x + 30} {-2} = -50 $$ 1 0.1 0 0 0 -35 $$ \frac{-2 x + 34} {-2} = -39 $$ $$ \frac{-2 x + 34} {-2} = -39 $$ 1 0.1 0 0 0 -22 $$ \frac{-2 x + 54} {-4} = -21 $$ $$ \frac{-2 x + 54} {-4} = -21 $$ 1 0.1 0 0 0 -15 $$ \frac{-2 x + 70} {5} = 18 $$ $$ \frac{-2 x + 70} {5} = 18 $$ 1 0.1 0 0 0 -10 $$ \frac{-2 x + 8} {2} = 50 $$ $$ \frac{-2 x + 8} {2} = 50 $$ 1 0.1 0 0 0 -46 $$ \frac{-22 + 3 x } {-4} = 25 $$ $$ \frac{-22 + 3 x } {-4} = 25 $$ 1 0.1 0 0 0 -26 $$ \frac{-24 + 12 x } {8} = -12 $$ $$ \frac{-24 + 12 x } {8} = -12 $$ 1 0.1 0 0 0 -6 $$ \frac{-28 + 2 x } {-2} = -29 $$ $$ \frac{-28 + 2 x } {-2} = -29 $$ 1 0.1 0 0 0 43 $$ \frac{-29 x + 2} {-4} = 14 $$ $$ \frac{-29 x + 2} {-4} = 14 $$ 1 0.1 0 0 0 2 $$ \frac{-3 x - 1} {8} = 7 $$ $$ \frac{-3 x - 1} {8} = 7 $$ 1 0.1 0 0 0 -19 $$ \frac{-3 x - 24} {-5} = -15 $$ $$ \frac{-3 x - 24} {-5} = -15 $$ 1 0.1 0 0 0 -33 $$ \frac{-3 x - 29} {2} = 32 $$ $$ \frac{-3 x - 29} {2} = 32 $$ 1 0.1 0 0 0 -31 $$ \frac{-3 x + 72} {3} = 32 $$ $$ \frac{-3 x + 72} {3} = 32 $$ 1 0.1 0 0 0 -8 $$ \frac{-30 - 3 x } {-12} = -5 $$ $$ \frac{-30 - 3 x } {-12} = -5 $$ 1 0.1 0 0 0 -30 $$ \frac{-34 - 2 x } {2} = 23 $$ $$ \frac{-34 - 2 x } {2} = 23 $$ 1 0.1 0 0 0 -40 $$ \frac{-34 - 4 x } {2} = 31 $$ $$ \frac{-34 - 4 x } {2} = 31 $$ 1 0.1 0 0 0 -24 $$ \frac{-35 - 2 x } {-31} = 3 $$ $$ \frac{-35 - 2 x } {-31} = 3 $$ 1 0.1 0 0 0 29 $$ \frac{-36 - 2 x } {-2} = 48 $$ $$ \frac{-36 - 2 x } {-2} = 48 $$ 1 0.1 0 0 0 30 $$ \frac{-36 + 4 x } {2} = -42 $$ $$ \frac{-36 + 4 x } {2} = -42 $$ 1 0.1 0 0 0 -12 $$ \frac{-4 x - 12} {2} = -30 $$ $$ \frac{-4 x - 12} {2} = -30 $$ 1 0.1 0 0 0 12 $$ \frac{-4 x + 36} {-2} = -50 $$ $$ \frac{-4 x + 36} {-2} = -50 $$ 1 0.1 0 0 0 -16 $$ \frac{-48 + 4 x } {2} = -50 $$ $$ \frac{-48 + 4 x } {2} = -50 $$ 1 0.1 0 0 0 -13 $$ \frac{-5 x + 39} {8} = -7 $$ $$ \frac{-5 x + 39} {8} = -7 $$ 1 0.1 0 0 0 19 $$ \frac{-7 x - 2} {-4} = -24 $$ $$ \frac{-7 x - 2} {-4} = -24 $$ 1 0.1 0 0 0 -14 $$ \frac{-9 + 2 x } {-3} = 31 $$ $$ \frac{-9 + 2 x } {-3} = 31 $$ 1 0.1 0 0 0 -42 $$ \frac{-92 - 4 x } {2} = -38 $$ $$ \frac{-92 - 4 x } {2} = -38 $$ 1 0.1 0 0 0 -4 $$ \frac{10 + 20 x } {-3} = -30 $$ $$ \frac{10 + 20 x } {-3} = -30 $$ 1 0.1 0 0 0 4 $$ \frac{10 + 5 x } {-10} = -10 $$ $$ \frac{10 + 5 x } {-10} = -10 $$ 1 0.1 0 0 0 18 $$ \frac{10 x - 32} {-3} = -6 $$ $$ \frac{10 x - 32} {-3} = -6 $$ 1 0.1 0 0 0 5 $$ \frac{100 + 2 x } {2} = 32 $$ $$ \frac{100 + 2 x } {2} = 32 $$ 1 0.1 0 0 0 -18 $$ \frac{11 x - 16} {-9} = -8 $$ $$ \frac{11 x - 16} {-9} = -8 $$ 1 0.1 0 0 0 8 $$ \frac{12 - 2 x } {2} = -30 $$ $$ \frac{12 - 2 x } {2} = -30 $$ 1 0.1 0 0 0 36 $$ \frac{18 - 2 x } {2} = 48 $$ $$ \frac{18 - 2 x } {2} = 48 $$ 1 0.1 0 0 0 -39 $$ \frac{19 - 7 x } {12} = -6 $$ $$ \frac{19 - 7 x } {12} = -6 $$ 1 0.1 0 0 0 13 $$ \frac{2 - 2 x } {-4} = 22 $$ $$ \frac{2 - 2 x } {-4} = 22 $$ 1 0.1 0 0 0 45 $$ \frac{2 + 2 x } {-2} = -45 $$ $$ \frac{2 + 2 x } {-2} = -45 $$ 1 0.1 0 0 0 44 $$ \frac{2 x - 1} {5} = -15 $$ $$ \frac{2 x - 1} {5} = -15 $$ 1 0.1 0 0 0 -37 $$ \frac{2 x - 14} {-5} = -14 $$ $$ \frac{2 x - 14} {-5} = -14 $$ 1 0.1 0 0 0 42 $$ \frac{2 x - 2} {-2} = 46 $$ $$ \frac{2 x - 2} {-2} = 46 $$ 1 0.1 0 0 0 -45 $$ \frac{2 x - 26} {-2} = 47 $$ $$ \frac{2 x - 26} {-2} = 47 $$ 1 0.1 0 0 0 -34 $$ \frac{2 x - 3} {5} = -17 $$ $$ \frac{2 x - 3} {5} = -17 $$ 1 0.1 0 0 0 -41 $$ \frac{2 x - 31} {5} = 9 $$ $$ \frac{2 x - 31} {5} = 9 $$ 1 0.1 0 0 0 38 $$ \frac{2 x - 4} {2} = 48 $$ $$ \frac{2 x - 4} {2} = 48 $$ 1 0.1 0 0 0 50 $$ \frac{2 x - 4} {3} = 30 $$ $$ \frac{2 x - 4} {3} = 30 $$ 1 0.1 0 0 0 47 $$ \frac{2 x - 80} {2} = -6 $$ $$ \frac{2 x - 80} {2} = -6 $$ 1 0.1 0 0 0 34 $$ \frac{2 x + 1} {-3} = -25 $$ $$ \frac{2 x + 1} {-3} = -25 $$ 1 0.1 0 0 0 37 $$ \frac{2 x + 2} {-2} = -25 $$ $$ \frac{2 x + 2} {-2} = -25 $$ 1 0.1 0 0 0 24 $$ \frac{2 x + 20} {-2} = -41 $$ $$ \frac{2 x + 20} {-2} = -41 $$ 1 0.1 0 0 0 31 $$ \frac{2 x + 20} {8} = -10 $$ $$ \frac{2 x + 20} {8} = -10 $$ 1 0.1 0 0 0 -50 $$ \frac{2 x + 38} {2} = -30 $$ $$ \frac{2 x + 38} {2} = -30 $$ 1 0.1 0 0 0 -49 $$ \frac{2 x + 6} {2} = 49 $$ $$ \frac{2 x + 6} {2} = 49 $$ 1 0.1 0 0 0 46 $$ \frac{2 x + 89} {7} = 5 $$ $$ \frac{2 x + 89} {7} = 5 $$ 1 0.1 0 0 0 -27 $$ \frac{21 - 3 x } {-4} = -21 $$ $$ \frac{21 - 3 x } {-4} = -21 $$ 1 0.1 0 0 0 -21 $$ \frac{22 + 2 x } {-3} = -26 $$ $$ \frac{22 + 2 x } {-3} = -26 $$ 1 0.1 0 0 0 28 $$ \frac{23 + 2 x } {3} = 31 $$ $$ \frac{23 + 2 x } {3} = 31 $$ 1 0.1 0 0 0 35 $$ \frac{24 x - 8} {2} = -40 $$ $$ \frac{24 x - 8} {2} = -40 $$ 1 0.1 0 0 0 -3 $$ \frac{26 - 2 x } {2} = 49 $$ $$ \frac{26 - 2 x } {2} = 49 $$ 1 0.1 0 0 0 -36 $$ \frac{28 + 36 x } {4} = 16 $$ $$ \frac{28 + 36 x } {4} = 16 $$ 1 0.1 0 0 0 1 $$ \frac{3 x - 24} {-3} = -17 $$ $$ \frac{3 x - 24} {-3} = -17 $$ 1 0.1 0 0 0 25 $$ \frac{3 x - 93} {3} = -16 $$ $$ \frac{3 x - 93} {3} = -16 $$ 1 0.1 0 0 0 15 $$ \frac{3 x + 4} {4} = 25 $$ $$ \frac{3 x + 4} {4} = 25 $$ 1 0.1 0 0 0 32 $$ \frac{3 x + 9} {4} = 15 $$ $$ \frac{3 x + 9} {4} = 15 $$ 1 0.1 0 0 0 17 $$ \frac{4 - 3 x } {2} = 50 $$ $$ \frac{4 - 3 x } {2} = 50 $$ 1 0.1 0 0 0 -32 $$ \frac{4 x - 76} {4} = -5 $$ $$ \frac{4 x - 76} {4} = -5 $$ 1 0.1 0 0 0 14 $$ \frac{4 x + 12} {-2} = -48 $$ $$ \frac{4 x + 12} {-2} = -48 $$ 1 0.1 0 0 0 21 $$ \frac{4 x + 13} {-3} = 29 $$ $$ \frac{4 x + 13} {-3} = 29 $$ 1 0.1 0 0 0 -25 $$ \frac{40 - 2 x } {-2} = -49 $$ $$ \frac{40 - 2 x } {-2} = -49 $$ 1 0.1 0 0 0 -29 $$ \frac{40 x - 16} {3} = -32 $$ $$ \frac{40 x - 16} {3} = -32 $$ 1 0.1 0 0 0 -2 $$ \frac{41 + 2 x } {-3} = 15 $$ $$ \frac{41 + 2 x } {-3} = 15 $$ 1 0.1 0 0 0 -43 $$ \frac{44 - 6 x } {7} = 14 $$ $$ \frac{44 - 6 x } {7} = 14 $$ 1 0.1 0 0 0 -9 $$ \frac{5 - 3 x } {-2} = 47 $$ $$ \frac{5 - 3 x } {-2} = 47 $$ 1 0.1 0 0 0 33 $$ \frac{57 - 3 x } {-3} = -26 $$ $$ \frac{57 - 3 x } {-3} = -26 $$ 1 0.1 0 0 0 -7 $$ \frac{59 - 3 x } {-2} = 5 $$ $$ \frac{59 - 3 x } {-2} = 5 $$ 1 0.1 0 0 0 23 $$ \frac{6 - 2 x } {2} = -46 $$ $$ \frac{6 - 2 x } {2} = -46 $$ 1 0.1 0 0 0 49 $$ \frac{6 - 4 x } {2} = 37 $$ $$ \frac{6 - 4 x } {2} = 37 $$ 1 0.1 0 0 0 -17 $$ \frac{6 + 2 x } {-2} = -42 $$ $$ \frac{6 + 2 x } {-2} = -42 $$ 1 0.1 0 0 0 39 $$ \frac{6 x - 18} {-2} = 42 $$ $$ \frac{6 x - 18} {-2} = 42 $$ 1 0.1 0 0 0 -11 $$ \frac{6 x - 30} {-2} = -33 $$ $$ \frac{6 x - 30} {-2} = -33 $$ 1 0.1 0 0 0 16 $$ \frac{6 x + 14} {2} = 34 $$ $$ \frac{6 x + 14} {2} = 34 $$ 1 0.1 0 0 0 9 $$ \frac{77 + 4 x } {-3} = 5 $$ $$ \frac{77 + 4 x } {-3} = 5 $$ 1 0.1 0 0 0 -23 $$ \frac{8 + 2 x } {2} = 45 $$ $$ \frac{8 + 2 x } {2} = 45 $$ 1 0.1 0 0 0 41 $$ \frac{8 + 4 x } {-2} = -48 $$ $$ \frac{8 + 4 x } {-2} = -48 $$ 1 0.1 0 0 0 22 $$ \frac{87 - 13 x } {-4} = -25 $$ $$ \frac{87 - 13 x } {-4} = -25 $$ 1 0.1 0 0 0 -1 $$ \frac{88 - 2 x } {2} = 34 $$ $$ \frac{88 - 2 x } {2} = 34 $$ 1 0.1 0 0 0 10 $$ \frac{9 x + 2} {-13} = -5 $$ $$ \frac{9 x + 2} {-13} = -5 $$ 1 0.1 0 0 0 7 Categoria per defecte en Matemàtiques - 4t dESO/Equacions/Eq. primer grau/Equacions de primer grau/Equacions del tipus 2x+1=3x+5 $$ -11 + 3 x = -2 x + 19 $$ $$ -11 + 3 x = -2 x + 19 $$ 1 0.1 0 0 0 6 $$ -15 x + 6 = -14 x + 11 $$ $$ -15 x + 6 = -14 x + 11 $$ 1 0.1 0 0 0 -5 $$ -16 x + 62 = 42 - 11 x $$ $$ -16 x + 62 = 42 - 11 x $$ 1 0.1 0 0 0 4 $$ -2 x - 27 = 2 x + 77 $$ $$ -2 x - 27 = 2 x + 77 $$ 1 0.1 0 0 0 -26 $$ -2 x - 27 = 89 + 2 x $$ $$ -2 x - 27 = 89 + 2 x $$ 1 0.1 0 0 0 -29 $$ -2 x - 63 = 2 x + 85 $$ $$ -2 x - 63 = 2 x + 85 $$ 1 0.1 0 0 0 -37 $$ -2 x - 64 = 92 + 2 x $$ $$ -2 x - 64 = 92 + 2 x $$ 1 0.1 0 0 0 -39 $$ -2 x - 65 = 2 x + 99 $$ $$ -2 x - 65 = 2 x + 99 $$ 1 0.1 0 0 0 -41 $$ -2 x - 75 = 53 + 2 x $$ $$ -2 x - 75 = 53 + 2 x $$ 1 0.1 0 0 0 -32 $$ -2 x - 78 = 2 x + 62 $$ $$ -2 x - 78 = 2 x + 62 $$ 1 0.1 0 0 0 -35 $$ -2 x - 80 = 2 x + 88 $$ $$ -2 x - 80 = 2 x + 88 $$ 1 0.1 0 0 0 -42 $$ -2 x - 89 = 2 x + 71 $$ $$ -2 x - 89 = 2 x + 71 $$ 1 0.1 0 0 0 -40 $$ -2 x + 2 = -3 x - 31 $$ $$ -2 x + 2 = -3 x - 31 $$ 1 0.1 0 0 0 -33 $$ -2 x + 54 = 2 x - 82 $$ $$ -2 x + 54 = 2 x - 82 $$ 1 0.1 0 0 0 34 $$ -2 x + 69 = -99 + 2 x $$ $$ -2 x + 69 = -99 + 2 x $$ 1 0.1 0 0 0 42 $$ -2 x + 77 = -40 + 7 x $$ $$ -2 x + 77 = -40 + 7 x $$ 1 0.1 0 0 0 13 $$ -2 x + 80 = 2 x - 100 $$ $$ -2 x + 80 = 2 x - 100 $$ 1 0.1 0 0 0 45 $$ -2 x + 93 = 2 x - 99 $$ $$ -2 x + 93 = 2 x - 99 $$ 1 0.1 0 0 0 48 $$ -2 x + 97 = 2 x - 51 $$ $$ -2 x + 97 = 2 x - 51 $$ 1 0.1 0 0 0 37 $$ -20 x - 50 = 12 x + 46 $$ $$ -20 x - 50 = 12 x + 46 $$ 1 0.1 0 0 0 -3 $$ -24 x + 58 = -26 x + 64 $$ $$ -24 x + 58 = -26 x + 64 $$ 1 0.1 0 0 0 3 $$ -26 + 47 x = 26 + 21 x $$ $$ -26 + 47 x = 26 + 21 x $$ 1 0.1 0 0 0 2 $$ -3 + 3 x = 2 x + 30 $$ $$ -3 + 3 x = 2 x + 30 $$ 1 0.1 0 0 0 33 $$ -3 x - 85 = 34 + 4 x $$ $$ -3 x - 85 = 34 + 4 x $$ 1 0.1 0 0 0 -17 $$ -3 x + 43 = -77 + 2 x $$ $$ -3 x + 43 = -77 + 2 x $$ 1 0.1 0 0 0 24 $$ -31 - 3 x = -42 - 2 x $$ $$ -31 - 3 x = -42 - 2 x $$ 1 0.1 0 0 0 11 $$ -39 - 3 x = 51 + 2 x $$ $$ -39 - 3 x = 51 + 2 x $$ 1 0.1 0 0 0 -18 $$ -4 x - 13 = 3 x + 78 $$ $$ -4 x - 13 = 3 x + 78 $$ 1 0.1 0 0 0 -13 $$ -4 x + 4 = -6 x + 14 $$ $$ -4 x + 4 = -6 x + 14 $$ 1 0.1 0 0 0 5 $$ -46 - 2 x = -3 x - 23 $$ $$ -46 - 2 x = -3 x - 23 $$ 1 0.1 0 0 0 23 $$ -49 - 2 x = 2 x + 87 $$ $$ -49 - 2 x = 2 x + 87 $$ 1 0.1 0 0 0 -34 $$ -5 x + 89 = -39 + 11 x $$ $$ -5 x + 89 = -39 + 11 x $$ 1 0.1 0 0 0 8 $$ -52 - 2 x = 2 x + 92 $$ $$ -52 - 2 x = 2 x + 92 $$ 1 0.1 0 0 0 -36 $$ -6 - 4 x = -96 + 2 x $$ $$ -6 - 4 x = -96 + 2 x $$ 1 0.1 0 0 0 15 $$ -6 + 3 x = 2 x + 25 $$ $$ -6 + 3 x = 2 x + 25 $$ 1 0.1 0 0 0 31 $$ -6 x - 47 = -5 x - 32 $$ $$ -6 x - 47 = -5 x - 32 $$ 1 0.1 0 0 0 -15 $$ -63 - 5 x = -4 x - 44 $$ $$ -63 - 5 x = -4 x - 44 $$ 1 0.1 0 0 0 -19 $$ -7 - 11 x = 85 + 12 x $$ $$ -7 - 11 x = 85 + 12 x $$ 1 0.1 0 0 0 -4 $$ -7 x - 41 = -8 x - 52 $$ $$ -7 x - 41 = -8 x - 52 $$ 1 0.1 0 0 0 -11 $$ -71 - 3 x = 2 x + 84 $$ $$ -71 - 3 x = 2 x + 84 $$ 1 0.1 0 0 0 -31 $$ -75 + 5 x = -35 + 3 x $$ $$ -75 + 5 x = -35 + 3 x $$ 1 0.1 0 0 0 20 $$ -78 + 5 x = 66 - 3 x $$ $$ -78 + 5 x = 66 - 3 x $$ 1 0.1 0 0 0 18 $$ -86 - 2 x = -6 + 2 x $$ $$ -86 - 2 x = -6 + 2 x $$ 1 0.1 0 0 0 -20 $$ -92 + 2 x = -2 x + 60 $$ $$ -92 + 2 x = -2 x + 60 $$ 1 0.1 0 0 0 38 $$ 1 + 3 x = -24 + 2 x $$ $$ 1 + 3 x = -24 + 2 x $$ 1 0.1 0 0 0 -25 $$ 11 x - 51 = -11 x - 95 $$ $$ 11 x - 51 = -11 x - 95 $$ 1 0.1 0 0 0 -2 $$ 2 x - 100 = -2 x + 88 $$ $$ 2 x - 100 = -2 x + 88 $$ 1 0.1 0 0 0 47 $$ 2 x - 56 = -88 + 3 x $$ $$ 2 x - 56 = -88 + 3 x $$ 1 0.1 0 0 0 32 $$ 2 x - 57 = -86 + 3 x $$ $$ 2 x - 57 = -86 + 3 x $$ 1 0.1 0 0 0 29 $$ 2 x - 78 = -2 x + 98 $$ $$ 2 x - 78 = -2 x + 98 $$ 1 0.1 0 0 0 44 $$ 2 x - 92 = 64 - 2 x $$ $$ 2 x - 92 = 64 - 2 x $$ 1 0.1 0 0 0 39 $$ 2 x - 98 = -2 x + 66 $$ $$ 2 x - 98 = -2 x + 66 $$ 1 0.1 0 0 0 41 $$ 2 x + 18 = 5 x - 33 $$ $$ 2 x + 18 = 5 x - 33 $$ 1 0.1 0 0 0 17 $$ 2 x + 32 = -2 x - 60 $$ $$ 2 x + 32 = -2 x - 60 $$ 1 0.1 0 0 0 -23 $$ 2 x + 4 = 5 x - 53 $$ $$ 2 x + 4 = 5 x - 53 $$ 1 0.1 0 0 0 19 $$ 2 x + 88 = -2 x - 84 $$ $$ 2 x + 88 = -2 x - 84 $$ 1 0.1 0 0 0 -43 $$ 25 + 2 x = 3 x + 52 $$ $$ 25 + 2 x = 3 x + 52 $$ 1 0.1 0 0 0 -27 $$ 28 + 6 x = 52 + 9 x $$ $$ 28 + 6 x = 52 + 9 x $$ 1 0.1 0 0 0 -8 $$ 3 + 69 x = -16 + 50 x $$ $$ 3 + 69 x = -16 + 50 x $$ 1 0.1 0 0 0 -1 $$ 3 x - 74 = -2 - 3 x $$ $$ 3 x - 74 = -2 - 3 x $$ 1 0.1 0 0 0 12 $$ 3 x + 4 = 2 x - 20 $$ $$ 3 x + 4 = 2 x - 20 $$ 1 0.1 0 0 0 -24 $$ 3 x + 58 = -4 x - 96 $$ $$ 3 x + 58 = -4 x - 96 $$ 1 0.1 0 0 0 -22 $$ 3 x + 96 = 66 + 2 x $$ $$ 3 x + 96 = 66 + 2 x $$ 1 0.1 0 0 0 -30 $$ 32 - 2 x = 4 - 3 x $$ $$ 32 - 2 x = 4 - 3 x $$ 1 0.1 0 0 0 -28 $$ 33 - 4 x = -6 x + 65 $$ $$ 33 - 4 x = -6 x + 65 $$ 1 0.1 0 0 0 16 $$ 37 - 7 x = -73 + 4 x $$ $$ 37 - 7 x = -73 + 4 x $$ 1 0.1 0 0 0 10 $$ 38 x - 17 = -61 x + 82 $$ $$ 38 x - 17 = -61 x + 82 $$ 1 0.1 0 0 0 1 $$ 4 x - 10 = -31 + 3 x $$ $$ 4 x - 10 = -31 + 3 x $$ 1 0.1 0 0 0 -21 $$ 4 x - 18 = 7 + 3 x $$ $$ 4 x - 18 = 7 + 3 x $$ 1 0.1 0 0 0 25 $$ 4 x - 46 = -2 + 2 x $$ $$ 4 x - 46 = -2 + 2 x $$ 1 0.1 0 0 0 22 $$ 4 x - 9 = 3 x + 12 $$ $$ 4 x - 9 = 3 x + 12 $$ 1 0.1 0 0 0 21 $$ 4 x + 11 = 3 x - 3 $$ $$ 4 x + 11 = 3 x - 3 $$ 1 0.1 0 0 0 -14 $$ 48 - 2 x = 2 x - 60 $$ $$ 48 - 2 x = 2 x - 60 $$ 1 0.1 0 0 0 27 $$ 5 x - 30 = 24 + 11 x $$ $$ 5 x - 30 = 24 + 11 x $$ 1 0.1 0 0 0 -9 $$ 57 - 2 x = 2 x - 87 $$ $$ 57 - 2 x = 2 x - 87 $$ 1 0.1 0 0 0 36 $$ 6 x - 2 = -34 + 4 x $$ $$ 6 x - 2 = -34 + 4 x $$ 1 0.1 0 0 0 -16 $$ 64 + 3 x = -10 x - 66 $$ $$ 64 + 3 x = -10 x - 66 $$ 1 0.1 0 0 0 -10 $$ 69 - 2 x = -71 + 2 x $$ $$ 69 - 2 x = -71 + 2 x $$ 1 0.1 0 0 0 35 $$ 7 + 3 x = -21 + 5 x $$ $$ 7 + 3 x = -21 + 5 x $$ 1 0.1 0 0 0 14 $$ 77 + 8 x = 65 + 7 x $$ $$ 77 + 8 x = 65 + 7 x $$ 1 0.1 0 0 0 -12 $$ 8 + 3 x = 34 + 2 x $$ $$ 8 + 3 x = 34 + 2 x $$ 1 0.1 0 0 0 26 $$ 8 x - 50 = 40 - 2 x $$ $$ 8 x - 50 = 40 - 2 x $$ 1 0.1 0 0 0 9 $$ 8 x - 51 = -93 + 14 x $$ $$ 8 x - 51 = -93 + 14 x $$ 1 0.1 0 0 0 7 $$ 89 - 2 x = -61 + 3 x $$ $$ 89 - 2 x = -61 + 3 x $$ 1 0.1 0 0 0 30 $$ 89 - 2 x = 2 x - 23 $$ $$ 89 - 2 x = 2 x - 23 $$ 1 0.1 0 0 0 28 $$ 9 x - 9 = 33 + 16 x $$ $$ 9 x - 9 = 33 + 16 x $$ 1 0.1 0 0 0 -6 $$ 92 + 2 x = -2 x - 88 $$ $$ 92 + 2 x = -2 x - 88 $$ 1 0.1 0 0 0 -45 $$ 93 - 2 x = 2 x - 67 $$ $$ 93 - 2 x = 2 x - 67 $$ 1 0.1 0 0 0 40 $$ 95 + 10 x = 74 + 7 x $$ $$ 95 + 10 x = 74 + 7 x $$ 1 0.1 0 0 0 -7 $$ 96 + 2 x = -80 - 2 x $$ $$ 96 + 2 x = -80 - 2 x $$ 1 0.1 0 0 0 -44 Categoria per defecte en Matemàtiques - 4t dESO/Equacions/Eq. primer grau/Equacions de primer grau/Problemes amb equacions de 1r grau angles d'un triangle

L'angle més gran d'un triangle és el doble que el mitjà i aquest mesura {g} graus més que l'angle més petit. Quant mesura l'angle més gran?

]]> 1 0.1 0 0 (180-{g})/2 0.01 1 1 2 1 graus 1 º private g calculated uniform 10 40 0 30 1 20 2 22 3 21 4 25 5 35 6 15 7 18 8 28 9 26 10 15 11 38 12 15 13 34 14 25 15 33 16 29 17 19 18 27 19 11 20 20 21 20 22 27 23 14 24 29 25 25 26 18 27 34 28 38 29 31 30 11 30 Barreja vi rosat En una bodega, es vol fer vi rosat mesclant vi negre de {n} €/litre amb vi blanc de {b} euros/litre i obtenim {l} litres de vi de {r} euros el litre, quants litres de vi negre hem utilitzat?

(Utilitza 2 decimals pel resultat)

]]> 1 0.1 0 0 {l}*({r}-{b})/({n}-{b}) 0.01 1 1 2 1 l private l calculated uniform 100 200 0 20 1 120 2 131 3 183 4 152 5 134 6 167 7 169 8 180 9 141 10 160 11 177 12 109 13 172 14 156 15 110 16 156 17 184 18 181 19 182 20 157 21 168 22 116 23 120 24 150 25 178 26 170 27 181 28 169 29 147 30 117 31 198 32 156 33 125 34 114 35 128 36 155 37 189 38 187 39 194 40 136 41 138 42 200 43 192 44 139 45 135 46 168 47 103 48 141 49 116 50 120 50 private r calculated uniform 3 6 1 20 1 3.5 2 3.2 3 3.6 4 4.0 5 3.6 6 3.5 7 4.6 8 3.7 9 3.1 10 3.7 11 4.6 12 3.4 13 4.1 14 3.9 15 4.5 16 3.3 17 4.0 18 3.8 19 4.7 20 3.1 21 4.0 22 4.7 23 3.9 24 4.0 25 3.2 26 3.3 27 3.1 28 4.2 29 5.0 30 5.7 31 6.0 32 5.4 33 3.4 34 4.7 35 3.3 36 3.3 37 3.0 38 3.4 39 3.4 40 5.7 41 4.4 42 5.6 43 3.6 44 5.7 45 5.4 46 3.9 47 4.5 48 4.4 49 5.5 50 3.8 50 private b calculated uniform 2 3 1 20 1 3 2 2.9 3 2.3 4 2.2 5 2.6 6 2.6 7 2.9 8 2.3 9 2.7 10 2.1 11 2.2 12 2.8 13 2.4 14 2.7 15 2.7 16 2.9 17 2.2 18 2.8 19 2.6 20 2.6 21 2.9 22 2.3 23 2.3 24 2.5 25 3.0 26 2.9 27 2.7 28 2.9 29 2.7 30 2.5 31 2.3 32 2.1 33 2.2 34 2.1 35 2.9 36 2.4 37 2.3 38 2.8 39 2.3 40 2.0 41 2.4 42 2.7 43 2.9 44 2.8 45 2.0 46 2.1 47 2.5 48 2.6 49 2.7 50 2.5 50 private n calculated uniform 4 6 1 20 1 4 2 4.8 3 5.1 4 4.9 5 4.6 6 5.2 7 5.8 8 5.1 9 5.7 10 5.0 11 4.9 12 5.6 13 4.3 14 4.7 15 5.4 16 4.8 17 4.8 18 5.3 19 6.0 20 4.0 21 5.6 22 5.9 23 4.1 24 5.5 25 5.6 26 5.9 27 5.2 28 4.6 29 4.6 30 4.2 31 4.8 32 4.5 33 5.3 34 5.5 35 5.1 36 4.9 37 4.4 38 4.8 39 4.6 40 5.9 41 5.6 42 5.8 43 4.4 44 4.0 45 4.6 46 5.4 47 5.1 48 4.9 49 5.5 50 5.4 50 Llaunes

Hem comprat begudes per a {a} amics, entre coca-coles i fantes. Quantes coca-coles hem comprat si sabem que en total ens hem gastat {t} euros, que el preu d'una coca-cola és de {c} euros i que el d'una fanta és de {f} euros?

]]> 1 0.1 0 0 ({t}-{f}*{a})/({c}-{f}) 0.01 1 1 2 private t calculated uniform 20 40 2 10 1 21.55 2 19.96 3 19.89 4 23.12 5 10.44 6 15.12 7 16.04 8 31.23 9 14.24 10 20.02 10 private f calculated uniform 0.5 2 2 10 1 0.9 2 0.83 3 1.56 4 1.91 5 1.25 6 0.57 7 0.54 8 1.71 9 1.14 10 1.42 10 private a calculated uniform 10 20 0 10 1 23 2 20 3 11 4 16 5 12 6 18 7 11 8 18 9 10 10 11 10 private c calculated uniform 0.5 2 2 10 1 0.95 2 1.25 3 1.95 4 0.67 5 0.68 6 1.11 7 1.55 8 1.74 9 1.85 10 1.86 10 trobada entre 2 ciutats

Un vianant surt d'una ciutat A cap a una altra ciutat B, que dista {D} km del punt A, a una velocitat de {v1} km/h. En el mateix moment un altre vianant surt de B cap a A a una velocitat de {v2} km/h. A quina distància del punt A coincidiran tots dos vianants?

]]> 1 0.1 0 0 ({v1}*{D})/({v1}+{v2}) 0.01 1 1 2 1 km private v1 calculated uniform 1.0 20 0 50 1 6 2 15 3 3 4 1 5 13 6 12 7 11 8 18 9 5 10 10 11 6 12 5 13 1 14 15 15 14 16 18 17 9 18 9 19 7 20 6 21 4 22 18 23 13 24 18 25 14 26 18 27 4 28 13 29 11 30 14 31 2 32 10 33 17 34 14 35 16 36 15 37 6 38 6 39 6 40 6 41 5 42 10 43 18 44 16 45 16 46 12 47 9 48 10 49 14 50 15 50 private D calculated uniform 50 100 0 50 1 68 2 78 3 64 4 54 5 71 6 79 7 59 8 58 9 70 10 63 11 84 12 54 13 77 14 54 15 81 16 53 17 81 18 97 19 84 20 82 21 95 22 52 23 90 24 60 25 84 26 54 27 94 28 93 29 65 30 82 31 64 32 78 33 78 34 90 35 50 36 86 37 53 38 76 39 65 40 58 41 61 42 81 43 82 44 65 45 65 46 75 47 99 48 69 49 66 50 75 50 private v2 calculated uniform 1 20 0 50 1 4 2 10 3 18 4 17 5 11 6 6 7 3 8 4 9 11 10 4 11 2 12 4 13 11 14 8 15 15 16 9 17 6 18 12 19 10 20 16 21 18 22 3 23 10 24 18 25 15 26 12 27 4 28 6 29 19 30 4 31 5 32 14 33 11 34 3 35 17 36 8 37 6 38 6 39 3 40 13 41 12 42 2 43 9 44 6 45 1 46 6 47 17 48 16 49 1 50 19 50 Categoria per defecte en Matemàtiques - 4t dESO/Equacions/Eq. primer grau/Llenguatge algebraic Aparella llenguatge natural amb algebraic (1) Aparella els enunciats següents amb cadascuna de les equacions. 1 0.1 0 1 Si restem 6 unitats a un nombre i el resultat el multipliquem per 2, obtenim 15. 2·(n - 6) = 15 El doble d'un nombre menys 6, dóna 15. 2n - 6 = 15 Si restem sis unitats a un nombre, i el resultat el dividim per 2, obtenim 15 (n - 6) : 2 = 15 El triple d'un nombre més sis unitats, dona 15 vegades el nombre. 3n + 6 =15 n 3n + 6 =15 n:2 - 6 =15 Aparella llenguatge natural amb algebraic (1) Aparella els enunciats següents amb cadascuna de les equacions. 1 0.1 0 1 Si restem 6 unitats a un nombre i el resultat el multipliquem per 2, obtenim 15. 2·(n - 6) = 15 El doble d'un nombre menys 6, dóna 15. 2n - 6 = 15 Si restem sis unitats a un nombre, i el resultat el dividim per 2, obtenim 15 (n - 6) : 2 = 15 El triple d'un nombre més sis unitats, dona 15 vegades el nombre. 3n + 6 =15 n 3n + 6 =15 n:2 - 6 =15 Edat Montse Quina de les equacions següents es correspon amb l'enunciat:

"L'edat de la Montse és el doble que la del seu germà Guillem i entre ambdós igualen els 15 anys del germà gran"?

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]]> 1 0.1 0 1 true true abc $$n + 2n=15$$ $$n + 2n=15n$$ $$n=2n=15$$ $$n \cdot 2n=15$$ $$2n + 15n=n$$ identitat Quina de les equacions següents es correspon amb l'enunciat (pot ser més d'una):

"La suma de tres nombres naturals consecutius és igual al triple del mitjà"?

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]]> 1 0.1 0 1 false true abc $$(n-1)+n+(n+1)=3n$$ $$(n-2)+(n-1)+n=3(n-1)$$ $$n+(n+1)+(n+2)=3(n+1)$$ $$n+2n+3n=6n$$ $$n+1+2+3=3n$$ identitat Quina de les equacions següents es correspon amb l'enunciat (pot ser més d'una):

"La suma de tres nombres naturals consecutius és igual al triple del mitjà"?

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]]> 1 0.1 0 1 false true abc $$(n-1)+n+(n+1)=3n$$ $$(n-2)+(n-1)+n=3(n-1)$$ $$n+(n+1)+(n+2)=3(n+1)$$ $$n+2n+3n=6n$$ $$n+1+2+3=3n$$ identitat notable (a+b)^2 Quina de les equacions següents es correspon amb l'enunciat:

"La suma de dos nombres qualssevol elevada al cuadrat, és igual al quadrat del primer, més el doble del primer pel segon més el quadrat del segon"?

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]]> 1 0.1 0 1 true true abc $$(a+b)^2=a^2+2ab+b^2$$ $$(a+b)^2=a^2+b^2$$ $$(a^2+b^2)=a^2+2ab+b^2$$ $$(a+b^2)=a^2+2ab+b^2$$ $$(a^2+b)=a^2+2ab+b^2$$ identitat notable (a+b)^2 Quina de les equacions següents es correspon amb l'enunciat:

"La suma de dos nombres qualssevol elevada al cuadrat, és igual al quadrat del primer, més el doble del primer pel segon més el quadrat del segon"?

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]]> 1 0.1 0 1 true true abc $$(a+b)^2=a^2+2ab+b^2$$ $$(a+b)^2=a^2+b^2$$ $$(a^2+b^2)=a^2+2ab+b^2$$ $$(a+b^2)=a^2+2ab+b^2$$ $$(a^2+b)=a^2+2ab+b^2$$ identitat notable (a+b)(a-b) Quina de les equacions següents es correspon amb l'enunciat:

"La suma de dos nombres qualssevol, multiplicada per la seva diferencia, dóna la diferència dels quadrats"?

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]]> 1 0.1 0 1 true true abc $$(a+b)\cdot (a-b)=a^2-b^2$$ $$(a+a)\cdot (b-b)=a^2-b^2$$ $$(a+b)\cdot (a+b)=a^2+b^2$$ $$(a-b)\cdot (a-b)=a^2-b^2$$ $$(a+b)\cdot (a-b)=a^2+2ab-b^2$$ identitat notable (a+b)(a-b) Quina de les equacions següents es correspon amb l'enunciat:

"La suma de dos nombres qualssevol, multiplicada per la seva diferencia, dóna la diferència dels quadrats"?

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]]> 1 0.1 0 1 true true abc $$(a+b)\cdot (a-b)=a^2-b^2$$ $$(a+a)\cdot (b-b)=a^2-b^2$$ $$(a+b)\cdot (a+b)=a^2+b^2$$ $$(a-b)\cdot (a-b)=a^2-b^2$$ $$(a+b)\cdot (a-b)=a^2+2ab-b^2$$ n+(n+1)=3n Quina de les equacions següents es correspon amb l'enunciat:

"La suma d'un nombre amb el seu doble, dóna el triple del numero"?

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]]> 1 0.1 0 1 true true abc $$n+(n+1)=3n$$ $$n \cdot (2n)=3n$$ $$(n+1) \cdot (n+2)=3n$$ $$n + 2n = 3n$$ $$n \cdot n^2=n^3$$ n+(n+1)=3n Quina de les equacions següents es correspon amb l'enunciat:

"La suma d'un nombre amb el seu doble, dóna el triple del numero"?

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]]> 1 0.1 0 1 true true abc $$n+(n+1)=3n$$ $$n \cdot (2n)=3n$$ $$(n+1) \cdot (n+2)=3n$$ $$n + 2n = 3n$$ $$n \cdot n^2=n^3$$