The inequality is 

Apply division property of inequality: Divide each side by 7.

             (Cancel common terms)

               (Divide: )

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

                       (Product of two same signs is positive)

Graph the solution set on a number line.

Note: A dot means that this point is included in the solution set. 

Check:

To check, substitute a number less than or equal to 12 in inequality .

       (Substitute s = 12)

            (Multiply: )

The inequality is true.

The inequality solution set is .