Вычислите:
- а) \(2\frac{1}{13}:\frac{9}{26} = \frac{27}{13} : \frac{9}{26} = \frac{27}{13} \cdot \frac{26}{9} = \frac{3}{1} \cdot \frac{2}{1} = 6\).
- б) \(6:\frac{1}{12} = 6 \cdot 12 = 72\).
- в) \(1\frac{6}{15}:1,2 = \frac{21}{15} : \frac{12}{10} = \frac{7}{5} : \frac{6}{5} = \frac{7}{5} \cdot \frac{5}{6} = \frac{7}{6} = 1\frac{1}{6}\).
Ответ: а) 6; б) 72; в) \(1\frac{1}{6}\).