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9-7*(3(2x-1)+2(x+5))=5*(2*(4x-5)-3(x-2))-x


Va rooooogggg frumos
Dau coroana


Răspuns :

9-7*(6x-3+2x+10)=5(8x-10-3x+6)-x
9-7(8x+7)=5(5x-4)-x
9-56x-49=25x-20-x
9-49+20=56x+25x-x
-20=80x
x= - 20:80
x=-1/4