The equation is

Apply Subtraction property of inequality: Subtract 3.75 from each side.

                                       (Additive inverse property: )

                                              (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 1, a number and less than 1.25, in .

                                              (Substitute )

                                                      (Add : )

The inequlity is true

The inequality solution is .