59. Выполните умножение: 1) \(\frac{5}{6}\) * \(\frac{3}{20}\) 2) \(\frac{3}{7}\) * \(\frac{6}{11}\) 3) \(\frac{10}{11}\) * \(\frac{11}{26}\) 4) \(\frac{24}{65}\) * \(\frac{39}{40}\)

Решение:
1) \(\frac{5}{6}\) * \(\frac{3}{20}\) = \(\frac{5 * 3}{6 * 20}\) = \(\frac{15}{120}\) = \(\frac{1}{8}\)
2) \(\frac{3}{7}\) * \(\frac{6}{11}\) = \(\frac{3 * 6}{7 * 11}\) = \(\frac{18}{77}\)
3) \(\frac{10}{11}\) * \(\frac{11}{26}\) = \(\frac{10 * 11}{11 * 26}\) = \(\frac{110}{286}\) = \(\frac{5}{13}\)
4) \(\frac{24}{65}\) * \(\frac{39}{40}\) = \(\frac{24 * 39}{65 * 40}\) = \(\frac{936}{2600}\) = \(\frac{117}{325}\)

Ответ:
1) \(\frac{1}{8}\)
2) \(\frac{18}{77}\)
3) \(\frac{5}{13}\)
4) \(\frac{117}{325}\)