283. Решите уравнение: 1) 6 3/11 + x = 10 6/7; 2) 9 5/36 − x = 2 4/9; 3) x − 5 17/60 = 7 9/20.

1. \(x=10\frac{6}{7}-6\frac{3}{11}=4+\frac{66}{77}-\frac{21}{77}=4\frac{45}{77}\).
2. \(x=9\frac{5}{36}-2\frac{4}{9}=7+\frac{5}{36}-\frac{16}{36}=6\frac{25}{36}\).
3. \(x=7\frac{9}{20}+5\frac{17}{60}=12+\frac{27}{60}+\frac{17}{60}=12\frac{11}{15}\).

Ответ: 1) \(x=4\frac{45}{77}\); 2) \(x=6\frac{25}{36}\); 3) \(x=12\frac{11}{15}\).