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

1) х = 10 6/7 - 6 3/11 = 4 6/7 - 3/11 = 4 66/77 - 21/77 = 4 45/77; 2) х = 9 5/36 - 2 4/9 = 7 5/36 - 4/9 = 7 5/36 - 16/36 = 6 41/36 - 16/36 = 6 25/36; 3) х = 7 9/20 + 5 17/60 = 12 9/20 + 17/60 = 12 27/60+17/60 = 12 44/60 = 12 11/15.