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Treure denominadors

Per treure els denominadors, es calcula el seu mcm

i s'escriuen fraccions equivalents: 

fraction numerator bold 2 bold x bold plus bold 1 over denominator bold 4 end fraction bold plus fraction numerator bold 3 bold x bold minus bold 5 over denominator bold 6 end fraction bold equals fraction numerator bold x bold plus bold 4 over denominator bold 10 end fraction

mcm(4,6,10) = 60.

Com que 60:4=15, 60:6=10, i  60:10=6:

fraction numerator bold 15 open parentheses bold 2 bold x bold plus bold 1 close parentheses over denominator bold 60 end fraction bold plus fraction numerator bold 10 open parentheses bold 3 bold x bold minus bold 5 close parentheses over denominator bold 60 end fraction bold equals fraction numerator bold 6 open parentheses bold x bold plus bold 4 bold right parenthesis close parentheses over denominator bold 60 end fraction

15(2x+1)+10(3x-5)=6(x+4)
 



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