There are two rules to remember when adding or subtracting fractions. The fractions need to have a common denominator. This means the denominator has to be the same. You only need to add or subtract ...

It is easy to add fractions when the numbers on the bottom are the same. All you need to do is add the tops of the fractions together. So \(\frac{2}{9} + \frac{5}{9} = \frac{7}{9}\) Sometimes you need ...