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3(2x+5) -4(1 - 2x)= 6(2x-3) +17

Răspuns :

6x+15 -4+8x=12x-18+17
14x+11=12x-1
14x-12x=-1-11
2x=-12
x=-6
6x+15-4+8x=12x-18+17 14x+11=12x-1 14x-12x=-1-11 2x=-12 X=-6