1. a) \(\frac{5}{6} : \frac{1}{3}\), б) \(3 \frac{3}{5} : \frac{3}{16}\), в) \(\frac{5}{7} \cdot 2\)

a) \(\frac{5}{6} : \frac{1}{3} = \frac{5}{6} \cdot \frac{3}{1} = \frac{5 \cdot 3}{6 \cdot 1} = \frac{15}{6} = \frac{5}{2} = 2 \frac{1}{2}\) б) \(3 \frac{3}{5} : \frac{3}{16} = \frac{18}{5} : \frac{3}{16} = \frac{18}{5} \cdot \frac{16}{3} = \frac{18 \cdot 16}{5 \cdot 3} = \frac{6 \cdot 16}{5} = \frac{96}{5} = 19 \frac{1}{5}\) в) \(\frac{5}{7} \cdot 2 = \frac{5 \cdot 2}{7} = \frac{10}{7} = 1 \frac{3}{7}\)