11. Выполните действия: а) 9 12/17 - 8 2/17; 6) 6 5/29 - 3 7/29; в) 9 8/13 - 8 11/13; г) 12 1/6 - 10 1/6.

1. а) $$9\frac{12}{17} - 8\frac{2}{17} = (9 - 8) + (\frac{12}{17} - \frac{2}{17}) = 1 + \frac{10}{17} = 1\frac{10}{17}$$
2. б) $$6\frac{5}{29} - 3\frac{7}{29} = 5\frac{34}{29} - 3\frac{7}{29} = (5 - 3) + (\frac{34}{29} - \frac{7}{29}) = 2 + \frac{27}{29} = 2\frac{27}{29}$$
3. в) $$9\frac{8}{13} - 8\frac{11}{13} = 8\frac{21}{13} - 8\frac{11}{13} = (8 - 8) + (\frac{21}{13} - \frac{11}{13}) = \frac{10}{13}$$
4. г) $$12\frac{1}{6} - 10\frac{1}{6} = (12 - 10) + (\frac{1}{6} - \frac{1}{6}) = 2$$

Ответ: а) 1 10/17; б) 2 27/29; в) 10/13; г) 2