The inequality is .

                       (Apply distributive property)

(Apply subtraction property of inequality:

For any real number, a, b, and c: If a < b then )

      (Subtract 24 from each side)

(Apply division property of inequality:

For any real number, a, b, and c: If a < b then )

                      (Divide each side by 12)

  (Multiply each side by negative one and flip the symbol)

                      (Product of two same signs is positive)

The graph of the solution set on a number line diagram.

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

The solution set of the inequality is .