222. Решите уравнение: a) 8 8/11-z=3 9/11; 6) y-4 3/5=2 4/5; B) 8 16/27-(x-2 17/27)=8 5/27.

а) $$8\frac{8}{11} - z = 3\frac{9}{11}$$

$$z = 8\frac{8}{11} - 3\frac{9}{11}$$

$$z = 7\frac{19}{11} - 3\frac{9}{11}$$

$$z = 4\frac{10}{11}$$

Ответ: $$z = 4\frac{10}{11}$$

б) $$y - 4\frac{3}{5} = 2\frac{4}{5}$$

$$y = 2\frac{4}{5} + 4\frac{3}{5}$$

$$y = 6\frac{7}{5}$$

$$y = 7\frac{2}{5}$$

Ответ: $$y = 7\frac{2}{5}$$

в) $$8\frac{16}{27} - (x - 2\frac{17}{27}) = 8\frac{5}{27}$$

$$x - 2\frac{17}{27} = 8\frac{16}{27} - 8\frac{5}{27}$$

$$x - 2\frac{17}{27} = \frac{11}{27}$$

$$x = \frac{11}{27} + 2\frac{17}{27}$$

$$x = 2\frac{28}{27}$$

$$x = 3\frac{1}{27}$$

Ответ: $$x = 3\frac{1}{27}$$