The inequality is .

      (Apply distributive property: )

              (Multiply: )

Apply addition property of inequality: Add 12b to each side.

Apply commutative property of addition: a + b = b + a.

       (Apply additive inverse property: )

             (Apply additive identity property: )

                       (Add: )

Apply subtraction property of inequality: Subtract 4 from each side.

                (Apply additive inverse property: )

                       (Apply additive identity property: )

                             (Subtract: )

Apply division property of inequality: If a > b  then .

                        (Divide each side by 16)

                                     (Cancel common terms)

Graph the solution set on a number line.

Note: A circle means that this point is not include in the solution set.

The inequality solution set is .