Answer
$\frac{4}{3}$
Work Step by Step
In order to add or subtract fractions, we need common denominators. Because 4/9 and 8/9 already have the same denominator, 9, we can add the numerators together:
$ \frac{8}{9} + \frac{4}{9} = \frac{12}{9}=\frac{4}{3}$
