here are your steps
1) isolate the w.
-4w - 4 = 8 (when you move a number to the other side of the equation, it changes signs)
-4w = 8 + 4 (add)
-4w = 12 (divide -4 on both sides, you will want to isolate the w)
-4w/-4 = 12/-4 (divide)
w = -3
w = -3 is your answer
hope this helps