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Question summary: Ebatzi ondorengo ekuazioak. Resuelve las siguientes ecuaciones. a. -2·3^x+9^(x-1)-27=0 b. 7^x=2 c. 5^(x+1)=6 d. 3^(2·x-1)=102 e. 6^(-x)+6^(-x+1)+6^(-x+2)+6^(-x+3)=259 Emaitza bakarrik adierazi, ez ipini aldagaia. Emaitza bat baino gehiago dituenean, sartu ordenatuta txikienetik handienera. En el caso de varias soluciones, introduce ordenados de menor a mayor. Ez badu soluziorik idatzi [empty set]. Si no tiene solución escribe [empty set].

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a. $negative 2 times 3 to the power of x plus 9 to the power of x minus 1 end exponent minus 27 equals 0$	b. $7 to the power of x equals 2$
c. $5 to the power of x plus 1 end exponent equals 6$	d. $3 to the power of 2 times x minus 1 end exponent equals 102$
e. $6 to the power of negative x end exponent plus 6 to the power of negative x plus 1 end exponent plus 6 to the power of negative x plus 2 end exponent plus 6 to the power of negative x plus 3 end exponent equals 259$

Preview question: Pregunta_8-b

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