1. Выполните умножение: 1) 5/8 · 4/15; 2) 6 3/4 · 1 11/45; 3) 11/18 · 36.

1. \(\frac{5}{8}\cdot\frac{4}{15}=\frac{1}{6}\).
2. \(6\frac{3}{4}=\frac{27}{4}\), \(1\frac{11}{45}=\frac{56}{45}\). Тогда \(\frac{27}{4}\cdot\frac{56}{45}=\frac{21}{5}=4\frac{1}{5}\).
3. \(\frac{11}{18}\cdot36=22\).

Ответ: 1) \(\frac{1}{6}\); 2) \(4\frac{1}{5}\); 3) \(22\).