The equation is

According to subtraction property of inequality: Subtract 4 from each side.

                      (Apply additive inverse property: )

                            (Apply additive identity property: )

                              (Subtract: )

Graph the solution set on a number line.

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

Check:

To check, substitute a number less than , in .

                        (Substitute  )

                                         (Sustract: )

The inequality is true.

The inequality solution is .