The original function is

Write as or

First solve the case .

Apply addition proparty of equality:If a = b then \ \

            (Add 5 to each side)

                        (Additive inerse property: )

                            (Add: )

Next solve the case .

Apply addition proparty of equality:If a = b then

          (Add 5 to each side)

                      (Additive inerse property: )

                            (Add: )

First, draw a number line.

To graph the solutions set, mark the numbers –13 and 7 on number line.

The solution set is .