Ответ:
- \(18 : \frac{9}{10}=18\cdot\frac{10}{9}=20\).
- \(48 : \frac{12}{27}=48\cdot\frac{27}{12}=108\).
- \(\frac{12}{13}:16=\frac{12}{13}\cdot\frac{1}{16}=\frac{3}{52}\).
- \(\frac{28}{27}:14=\frac{28}{27}\cdot\frac{1}{14}=\frac{2}{27}\).
Ответ: 1) 20; 2) 108; 3) \(\frac{3}{52}\); 4) \(\frac{2}{27}\).
