Question

4|2x+7|=16 x=? and x=?

Answer 1

4 | 2x + 7 | = 16...divide both sides by 4
| 2x + 7 | = 16/4
| 2x + 7 | = 4

2x + 7 = 4            -(2x + 7) = 4
2x = 4 - 7             -2x - 7 = 4
2x = -3                 -2x = 4 + 7
x = -3/2                -2x = 11
                             x = -11/2

so x = -3/2 and x = -11/2