The inequality is .

According to addition property of inequality: Add 5 to each side.

                           (Apply additive inverse property: )

                                 (Apply additive identity property: )

                                     (Add: ) \ \ 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 12, a number greater than or equal to 12 in .

                              (Substitute )

                                               (Sustract: )

The inequality is true.

The inequality solution is .