49. \(\frac{15}{16} \times \frac{3}{2} : \frac{5}{8}\)

Решение:

\(\frac{15}{16} \times \frac{3}{2} \div \frac{5}{8} = \frac{45}{32} \div \frac{5}{8} = \frac{45}{32} \times \frac{8}{5} = \frac{45 \times 8}{32 \times 5} = \frac{360}{160} = \frac{9}{4}\)

Ответ: \(\frac{9}{4}\)