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7(1-x)-5(2x-3)=1/3(x-3)-12x+18 va rog ajutatima cine stie acest exercitiu

Răspuns :

7-7x-10x+15=1/3x-1-12x+18
22-17x=1/3x+17-12x
66-51x=x+51-36x
66-51x=-35x+51
-51x+35x=51-66
-16x=-15
x=15/16

Succes!