4 6 / 5 5 =

\( \frac{4}{5} : \frac{6}{5} = \frac{4}{5} \times \frac{5}{6} = \frac{4 \times 5}{5 \times 6} = \frac{20}{30} = \frac{2}{3} \)

Ответ: \( \frac{2}{3} \)