5.558 Найдите частное: a) \(\frac{7}{9} : \frac{7}{18}\) b) \(\frac{3}{4} : \frac{7}{9}\) c) \(\frac{6}{11} : 6\) d) \(\frac{5}{7} : \frac{1}{7}\) e) \(\frac{9}{13} : 3\) f) \(\frac{15}{22} : 5\)

a) \(\frac{7}{9} : \frac{7}{18} = \frac{7}{9} \cdot \frac{18}{7} = \frac{18}{9} = 2\) b) \(\frac{3}{4} : \frac{7}{9} = \frac{3}{4} \cdot \frac{9}{7} = \frac{27}{28}\) c) \(\frac{6}{11} : 6 = \frac{6}{11} \cdot \frac{1}{6} = \frac{1}{11}\) d) \(\frac{5}{7} : \frac{1}{7} = \frac{5}{7} \cdot \frac{7}{1} = 5\) e) \(\frac{9}{13} : 3 = \frac{9}{13} \cdot \frac{1}{3} = \frac{3}{13}\) f) \(\frac{15}{22} : 5 = \frac{15}{22} \cdot \frac{1}{5} = \frac{3}{22}\)