- a) $$rac{1}{2} : \frac{1}{6} = \frac{1}{2} \cdot \frac{6}{1} = \frac{1 \cdot 6}{2 \cdot 1} = \frac{6}{2} = 3$$
- b) $$rac{2}{5} : \frac{1}{10} = \frac{2}{5} \cdot \frac{10}{1} = \frac{2 \cdot 10}{5 \cdot 1} = \frac{20}{5} = 4$$
- c) $$rac{2}{3} : \frac{4}{9} = \frac{2}{3} \cdot \frac{9}{4} = \frac{2 \cdot 9}{3 \cdot 4} = \frac{18}{12} = \frac{3}{2} = 1\frac{1}{2}$$
Ответ: a) 3; b) 4; c) $$1\frac{1}{2}$$