Решим уравнение:
1) $$4\frac{5}{7}-(x-6\frac{3}{7})=2\frac{6}{7}$$;
- $$4\frac{5}{7}-x+6\frac{3}{7}=2\frac{6}{7}$$
- $$10\frac{8}{7}-x=2\frac{6}{7}$$
- $$11\frac{1}{7}-x=2\frac{6}{7}$$
- $$x=11\frac{1}{7}-2\frac{6}{7}$$
- $$x=10\frac{8}{7}-2\frac{6}{7}$$
- $$x=8\frac{2}{7}$$
Ответ: $$x = 8\frac{2}{7}$$
1) $$7\frac{7}{30}-(5\frac{11}{30}-y)=3\frac{19}{30}$$;
- $$7\frac{7}{30}-5\frac{11}{30}+y=3\frac{19}{30}$$
- $$1\frac{26}{30}+y=3\frac{19}{30}$$
- $$y=3\frac{19}{30}-1\frac{26}{30}$$
- $$y=2\frac{49}{30}-1\frac{26}{30}$$
- $$y=1\frac{23}{30}$$
Ответ: $$y = 1\frac{23}{30}$$