Question

Qual resultado da equaçao

2x + 4 - x = 2(x + 1)

Answer 1

2x + 4 - x = 2 . (x + 1)
2x + 4 - x = 2x + 2
x - 2x = 2 - 4
- x = - 2

x = 2

S = {2}

Answer 2

2x+4-x=2x+2
2x-x-2x=2-4
x-2x=-2
-x=-2/-1
x=2