The equality is

Apply Subtraction property of inequality: Subtract from n each side.

                 (Additive inverse property: )

                    ( Additive identity property: )   

                         (Sustract:)

                     (Divide each side by 2)

                          (Cancel common terms )

                               (Divide:

Graph the solution set o n a number line

Check:

To check, substitute -7, in .

                 (Multiply:)

                       (Sustract:)

The equality solution is .