Ответ:

  1. \(7\frac{2}{3}=\frac{7\cdot3+2}{3}=\frac{23}{3}\).
  2. \(3\frac{5}{6}=\frac{3\cdot6+5}{6}=\frac{23}{6}\).
  3. \(10\frac{1}{8}=\frac{10\cdot8+1}{8}=\frac{81}{8}\).
  4. \(9\frac{7}{20}=\frac{9\cdot20+7}{20}=\frac{187}{20}\).

Ответ: \(\frac{23}{3};\ \frac{23}{6};\ \frac{81}{8};\ \frac{187}{20}\).