Вариант 1. 1. Выполните действия: а) \(1\frac{5}{7}:1\frac{1}{7}\); б) \(3\frac{1}{5}:2\frac{2}{15}\); в) \(5\frac{2}{3}:\frac{1}{3}-1\frac{7}{12}\cdot6\).

1. а) \(1\frac{5}{7}:1\frac{1}{7}=\frac{12}{7}:\frac{8}{7}=\frac{12}{7}\cdot\frac{7}{8}=\frac{3}{2}=1\frac{1}{2}\).

   б) \(3\frac{1}{5}:2\frac{2}{15}=\frac{16}{5}:\frac{32}{15}=\frac{16}{5}\cdot\frac{15}{32}=\frac{3}{2}=1\frac{1}{2}\).

   в) \(5\frac{2}{3}:\frac{1}{3}-1\frac{7}{12}\cdot6=\frac{17}{3}\cdot3-\frac{19}{12}\cdot6=17-\frac{19}{2}=\frac{15}{2}=7\frac{1}{2}\).

Ответ: а) \(1\frac{1}{2}\); б) \(1\frac{1}{2}\); в) \(7\frac{1}{2}\).