222. Решите уравнение: a) 6 2/13 - x = 3 7/13; б) y - 5 8/9 = 3 5/9; в) (z + 2 4/11) - 4 7/11 = 1 6/11.

1. a) $$6\frac{2}{13} - x = 3\frac{7}{13}$$ $$x = 6\frac{2}{13} - 3\frac{7}{13}$$ $$x = 5\frac{15}{13} - 3\frac{7}{13}$$ $$x = 2\frac{8}{13}$$

2. б) $$y - 5\frac{8}{9} = 3\frac{5}{9}$$ $$y = 3\frac{5}{9} + 5\frac{8}{9}$$ $$y = 8\frac{13}{9}$$ $$y = 9\frac{4}{9}$$

3. в) $$(z + 2\frac{4}{11}) - 4\frac{7}{11} = 1\frac{6}{11}$$ $$z + 2\frac{4}{11} = 1\frac{6}{11} + 4\frac{7}{11}$$ $$z + 2\frac{4}{11} = 5\frac{13}{11}$$ $$z + 2\frac{4}{11} = 6\frac{2}{11}$$ $$z = 6\frac{2}{11} - 2\frac{4}{11}$$ $$z = 5\frac{13}{11} - 2\frac{4}{11}$$ $$z = 3\frac{9}{11}$$

Ответ: a) $$x = 2\frac{8}{13}$$; б) $$y = 9\frac{4}{9}$$; в) $$z = 3\frac{9}{11}$$