The inequality is .

Apply subtraction property of inequality: Subtract 6 from each side.

       (Apply additive inverse property: )

              (Apply additive identity property: )

                    (Subtract: )

Apply multiplication property of inequality: Multiply each side by 2.

                (Cancel common terms)

                      (Multiply: )

(Multiply each side by negative one and flip the symbol)

                             (Product of two same signs is positive)

Graph the solution set on a number line.

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

Check:

To check, substitute a number greater than 40 in .

             (Substitute x = 42)

             (Divide: )

                    (Add: )

The inequality is true.

The inequality solution set is .