Question

(3×+1)•(×-1)=3(×+2) Me ajudem a resolver essa conta

Answer 1

3x+1.x-1=3(x+2)
3x+1.x-1=3x+6
(3x+1).(-1x)=3x+6
3x-x-3x=6
2x-3x=6
-1x=6
x=6/-1
x=-6