Ответ:
- а) \(\frac{2}{9}:\frac{9}{14}=\frac{2}{9}\cdot\frac{14}{9}=\frac{4}{81}\).
- б) \(\frac{7}{17}:\frac{28}{51}=\frac{7}{17}\cdot\frac{51}{28}=\frac{3}{4}\).
- в) \(\frac{8}{91}:\frac{6}{13}=\frac{8}{91}\cdot\frac{13}{6}=\frac{4}{21}\).
- г) \(42:\frac{6}{7}=42\cdot\frac{7}{6}=49\).
- д) \(3\frac{5}{9}:\frac{16}{27}=\frac{32}{9}\cdot\frac{27}{16}=6\).
- е) \(2\frac{7}{10}:3\frac{2}{5}=\frac{27}{10}:\frac{17}{5}=\frac{27}{34}\).
Ответ: а) \(\frac{4}{81}\); б) \(\frac{3}{4}\); в) \(\frac{4}{21}\); г) 49; д) 6; е) \(\frac{27}{34}\).
