\[ \frac{2}{3} = \frac{2 × 2}{3 × 2} = \frac{4}{6} \]
\[ \frac{4}{6} + \frac{1}{6} = \frac{4+1}{6} = \frac{5}{6} \]
\[ \frac{5}{6} : \frac{5}{9} = \frac{5}{6} \times \frac{9}{5} \]
\[ \frac{5}{6} \times \frac{9}{5} = \frac{5 \times 9}{6 \times 5} = \frac{45}{30} \]
\[ \frac{45}{30} = \frac{45 ÷ 15}{30 ÷ 15} = \frac{3}{2} \]
\[ \frac{3}{2} = 1,5 \]
Ответ: 1,5