-8 < 2x-4 < 8
Add 4 to all sides:
-8 + 4 < 2x -4 + 4 < 8 + 4
Simplify :
-4 < 2x < 12
Divide all sides by 2:
-4/2 < 2x/2 < 12/2
Simplify to get the answer:
-2 < x < 6
