The inequality .

Solve inequality.

                                     (Original inequality)

                         (Add to each side)

                                          (Apply additive inverse property: )

                                     (Divide each side by )

                                              (Cancel common terms)

Therefore, the solution set is .

Check:

Let three values and are substitute in the original inequality, .

If then     (This is false)

If then     (This is true)

If then           (This is true)

The solution set is .