4. Решите уравнение:
- $$a) 5\frac{6}{7} - x = 3\frac{2}{7}$$
$$x = 5\frac{6}{7} - 3\frac{2}{7}$$
$$x = (5-3) + (\frac{6}{7} - \frac{2}{7})$$
$$x = 2 + \frac{4}{7}$$
$$x = 2\frac{4}{7}$$
- $$б) y + 4\frac{8}{11} = 10\frac{7}{11}$$
$$y = 10\frac{7}{11} - 4\frac{8}{11}$$
$$y = 9\frac{18}{11} - 4\frac{8}{11}$$
$$y = (9 - 4) + (\frac{18}{11} - \frac{8}{11})$$
$$y = 5 + \frac{10}{11}$$
$$y = 5\frac{10}{11}$$
Ответ: а) $$x = 2\frac{4}{7}$$; б) $$y = 5\frac{10}{11}$$