The inequality is .

Apply multiplication property of inequality: Multiply each side by 3.

                (Cancel common terms)

                    (Multiply: )

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

                           (Product of two same signs is positive)

Apply division property of inequality: Divide each side by 2.

                           (Cancel commen terms)

                             (Divide: )

Check:

To check, substitute three different values for t into the original inequality : 45, a number less than 45, and greater than 45.

Let three values are .

If then   (This is false)

If then   (This is true)

If then   (This is true).

The inequality solution set is .