Question

quanto que e 2(x+1)-(x-1)=0

Answer 1

2 (x + 1) - (x - 1) = 0
2x + 2 - x + 1 = 0
2x - x = - 1 - 2
x = - 3

Answer 2

2(x+1)-(x-1)=0
2x+2-x+1=0
2x-x=-2-1
x=-3