-|4x-2|=-10
-| 4x - 2 | = -10
Divide both sides by -1: | 4x - 2 | = 10
Because it's an absolute value problem: Either 4x - 2 = 10 or 4x - 2 = -10
If 4x - 2 = 10 ---> 4x = 12 ---> x = 3
If 4x - 2 = -10 ---> 4x = -8 ---> x = -2