Question

If 5 + x = 12, and you add -5 to the left side of equation, what should you add to right side of equation? A) -7 B) -5 C) 5 D) 7

Answer 1

whatever you do to one side you must do that to the other side. So you must add another -5

Answer 2

You must add -5 to the right side of the equation. You would balance -5 on the left with -5 on the right.