5 10 a) -:- 9 27 e) 4 4-:2-. 9 3

a) $$\frac{5}{9}:\frac{10}{27} = \frac{5}{9} \cdot \frac{27}{10} = \frac{5\cdot 27}{9 \cdot 10} = \frac{1 \cdot 3}{1 \cdot 2} = \frac{3}{2} = 1\frac{1}{2}$$ e) $$4\frac{4}{9}:2\frac{2}{3} = \frac{4\cdot9+4}{9}:\frac{2\cdot3+2}{3} = \frac{40}{9}:\frac{8}{3} = \frac{40}{9} \cdot \frac{3}{8} = \frac{40\cdot 3}{9\cdot 8} = \frac{5 \cdot 1}{3 \cdot 1} = \frac{5}{3} = 1\frac{2}{3}$$ Ответ: a) $$1\frac{1}{2}$$, e) $$1\frac{2}{3}$$