Вычитание смешанных чисел

Выполним вычитание смешанных чисел:

a) $$8\frac{9}{11}-3\frac{5}{11} = (8-3) + (\frac{9}{11}-\frac{5}{11}) = 5 + \frac{9-5}{11} = 5 + \frac{4}{11} = 5\frac{4}{11}$$

б) $$6\frac{5}{8}-4 = 6 + \frac{5}{8} - 4 = 2\frac{5}{8}$$

в) $$9-\frac{5}{6} = 8\frac{6}{6} - \frac{5}{6} = 8\frac{6-5}{6} = 8\frac{1}{6}$$

г) $$9-3\frac{5}{8} = 8\frac{8}{8} - 3\frac{5}{8} = (8-3) + (\frac{8}{8} - \frac{5}{8}) = 5 + \frac{8-5}{8} = 5 + \frac{3}{8} = 5\frac{3}{8}$$

д) $$8\frac{2}{7}-3\frac{5}{7} = 7\frac{9}{7}-3\frac{5}{7} = (7-3) + (\frac{9}{7}-\frac{5}{7}) = 4 + \frac{9-5}{7} = 4 + \frac{4}{7} = 4\frac{4}{7}$$

e) $$8\frac{3}{8}-5\frac{3}{8} = (8-5) + (\frac{3}{8}-\frac{3}{8}) = 3 + 0 = 3$$

Ответ:

• a) $$5\frac{4}{11}$$
• б) $$2\frac{5}{8}$$
• в) $$8\frac{1}{6}$$
• г) $$5\frac{3}{8}$$
• д) $$4\frac{4}{7}$$
• e) $$3$$