What you need to do is do the inverse operation on both sides. So right now, 8 is being multiplied by h, so the inverse operation is division. You divide by 8 on both sides to get what h equals. So your equation looks like:
8h/8=112/8
8h/8 cancels out, so you are left only with h. 112 divided by 8 is 14, so your left with h=14 and that is your answer.