20 = 5(-3 + x) Multiply 5 into (-3 + x)
20 = -15 + 5x Add 15 on both sides
35 = 5x Divide by 5 on both sides to get x by itself
7 = x
20 = 5(-3 + x) Divide 5 on both sides
4 = -3 + x Add 3 on both sides to get x by itself
