Ответ:

Сокращаем только дробные части смешанных чисел.

а)

\(1\frac{2}{8}=1\frac{1}{4}\); \(1\frac{3}{6}=1\frac{1}{2}\); \(2\frac{4}{10}=2\frac{2}{5}\); \(1\frac{3}{12}=1\frac{1}{4}\).

\(3\frac{8}{8}=4\); \(4\frac{4}{6}=4\frac{2}{3}\); \(3\frac{3}{9}=3\frac{1}{3}\); \(5\frac{4}{12}=5\frac{1}{3}\).

б)

\(8\frac{5}{10}=8\frac{1}{2}\); \(5\frac{5}{40}=5\frac{1}{8}\); \(7\frac{9}{12}=7\frac{3}{4}\); \(24\frac{10}{25}=24\frac{2}{5}\).

\(17\frac{14}{16}=17\frac{7}{8}\); \(34\frac{14}{35}=34\frac{2}{5}\); \(21\frac{11}{22}=21\frac{1}{2}\).

Ответ: а) \(1\frac{1}{4}, 1\frac{1}{2}, 2\frac{2}{5}, 1\frac{1}{4}, 4, 4\frac{2}{3}, 3\frac{1}{3}, 5\frac{1}{3}\); б) \(8\frac{1}{2}, 5\frac{1}{8}, 7\frac{3}{4}, 24\frac{2}{5}, 17\frac{7}{8}, 34\frac{2}{5}, 21\frac{1}{2}\).