25. Выполните деление: а) 6/25 : 9/5; б) 6 2/3 : 1 1/8; в) 8/27 : 8/9; г) 57 : 19/24; д) 9 5/7 : 23/28; е) 36/47 : 18.

а) \(\frac{6}{25}:\frac{9}{5}=\frac{6}{25}\cdot\frac{5}{9}=\frac{2}{15}\).

б) \(6\frac{2}{3}:1\frac{1}{8}=\frac{20}{3}:\frac{9}{8}=\frac{20}{3}\cdot\frac{8}{9}=\frac{160}{27}=5\frac{25}{27}\).

в) \(\frac{8}{27}:\frac{8}{9}=\frac{8}{27}\cdot\frac{9}{8}=\frac{1}{3}\).

г) \(57:\frac{19}{24}=57\cdot\frac{24}{19}=3\cdot24=72\).

д) \(9\frac{5}{7}:\frac{23}{28}=\frac{68}{7}:\frac{23}{28}=\frac{68}{7}\cdot\frac{28}{23}=\frac{272}{23}=11\frac{19}{23}\).

е) \(\frac{36}{47}:18=\frac{36}{47}\cdot\frac{1}{18}=\frac{2}{47}\).

Ответ: а) \(\frac{2}{15}\); б) \(5\frac{25}{27}\); в) \(\frac{1}{3}\); г) \(72\); д) \(11\frac{19}{23}\); е) \(\frac{2}{47}\).