Feedback: Not quite! Find the least common denominator ($9$), rewrite $\frac{2}{3}$ as $\frac{6}{9}$, then add $\frac{6}{9} + \frac{4}{9} = \frac{10}{9}$.
Feedback: Well done! Find the least common denominator ($9$), rewrite $\frac{2}{3}$ as $\frac{6}{9}$, then add $\frac{6}{9} + \frac{4}{9} = \frac{10}{9}$.