a) $$\frac{9}{8}:\frac{3}{4}$$= б) $$\frac{1}{2}:\frac{3}{5}$$= в) $$\frac{7}{10}:\frac{2}{9}$$= г) $$\frac{1}{12}:\frac{1}{5}$$= д) $$\frac{5}{9}:\frac{1}{2}$$= e) $$\frac{1}{3}:\frac{1}{6}$$=

a) $$\frac{9}{8}:\frac{3}{4}=\frac{9}{8}\cdot\frac{4}{3}=\frac{3\cdot1}{2\cdot1}=\frac{3}{2}=1\frac{1}{2}$$

б) $$\frac{1}{2}:\frac{3}{5}=\frac{1}{2}\cdot\frac{5}{3}=\frac{1\cdot5}{2\cdot3}=\frac{5}{6}$$

в) $$\frac{7}{10}:\frac{2}{9}=\frac{7}{10}\cdot\frac{9}{2}=\frac{7\cdot9}{10\cdot2}=\frac{63}{20}=3\frac{3}{20}$$

г) $$\frac{1}{12}:\frac{1}{5}=\frac{1}{12}\cdot\frac{5}{1}=\frac{1\cdot5}{12\cdot1}=\frac{5}{12}$$

д) $$\frac{5}{9}:\frac{1}{2}=\frac{5}{9}\cdot\frac{2}{1}=\frac{5\cdot2}{9\cdot1}=\frac{10}{9}=1\frac{1}{9}$$

е) $$\frac{1}{3}:\frac{1}{6}=\frac{1}{3}\cdot\frac{6}{1}=\frac{1\cdot2}{1\cdot1}=\frac{2}{1}=2

Ответ: a) $$1\frac{1}{2}$$; б) $$\frac{5}{6}$$; в) $$3\frac{3}{20}$$; г) $$\frac{5}{12}$$; д) $$1\frac{1}{9}$$; е) 2