5 4 / 6 10 =

\( \frac{5}{6} : \frac{4}{10} = \frac{5}{6} \times \frac{10}{4} = \frac{5 \times 10}{6 \times 4} = \frac{50}{24} = \frac{25}{12} \)

Ответ: \( \frac{25}{12} \)