Write five fifteenths in its simplest form.
We need to simplify the fraction five over 15 or five fifteenths. Five and 15 are both multiples of five, which means we can divide both numbers by five. Five divided by five is one. 15 divided by five is three. Five fifteenths in its simplest form is one-third. We divided the numerator and the denominator by five to give us the simplest form of the fraction, which is a third.