The inequality  is

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

                (Additive inverse property: )

                      (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 7 and less than  or equal to 7 in  

                 (Substitute )

                      (Subtract: )

The inequality  is true.

The inequality solution is .