2.418 Выполните деление: a) $$\frac{5}{9}:5$$; б) $$\frac{4}{7}:4$$; в) $$1:\frac{5}{13}$$; г) $$7:\frac{4}{7}$$; д) $$9:\frac{3}{7}$$; е) $$4:\frac{8}{9}$$

a) $$\frac{5}{9}:5 = \frac{5}{9} \cdot \frac{1}{5} = \frac{5 \cdot 1}{9 \cdot 5} = \frac{1}{9}$$ <p><strong>Ответ:</strong> $$\frac{1}{9}$$</p> б) $$\frac{4}{7}:4 = \frac{4}{7} \cdot \frac{1}{4} = \frac{4 \cdot 1}{7 \cdot 4} = \frac{1}{7}$$ <p><strong>Ответ:</strong> $$\frac{1}{7}$$</p> в) $$1:\frac{5}{13} = 1 \cdot \frac{13}{5} = \frac{13}{5} = 2\frac{3}{5}$$ <p><strong>Ответ:</strong> $$2\frac{3}{5}$$</p> г) $$7:\frac{4}{7} = 7 \cdot \frac{7}{4} = \frac{49}{4} = 12\frac{1}{4}$$ <p><strong>Ответ:</strong> $$12\frac{1}{4}$$</p> д) $$9:\frac{3}{7} = 9 \cdot \frac{7}{3} = \frac{9 \cdot 7}{3} = \frac{3 \cdot 7}{1} = 21$$ <p><strong>Ответ:</strong> $$21$$</p> е) $$4:\frac{8}{9} = 4 \cdot \frac{9}{8} = \frac{4 \cdot 9}{8} = \frac{1 \cdot 9}{2} = \frac{9}{2} = 4\frac{1}{2}$$ <p><strong>Ответ:</strong> $$4\frac{1}{2}$$</p>