1. Выполните действия:
- $$a) \frac{10}{11} + \frac{4}{11} + \frac{3}{11} = \frac{10 + 4 + 3}{11} = \frac{17}{11} = 1\frac{6}{11}$$
- $$б) 4\frac{5}{9} + 3\frac{8}{9} = (4 + 3) + (\frac{5}{9} + \frac{8}{9}) = 7 + \frac{5 + 8}{9} = 7 + \frac{13}{9} = 7 + 1\frac{4}{9} = 8\frac{4}{9}$$
- $$в) 6 - 2\frac{3}{8} = 5\frac{8}{8} - 2\frac{3}{8} = (5 - 2) + (\frac{8}{8} - \frac{3}{8}) = 3 + \frac{8 - 3}{8} = 3\frac{5}{8}$$
- $$г) 5\frac{6}{13} - 1\frac{1}{13} = (5 - 1) + (\frac{6}{13} - \frac{1}{13}) = 4 + \frac{6 - 1}{13} = 4\frac{5}{13}$$
Ответ: a) $$1\frac{6}{11}$$; б) $$8\frac{4}{9}$$; в) $$3\frac{5}{8}$$; г) $$4\frac{5}{13}$$