Решите уравнение: 1) х + 7 4/15 = 9 7/10; 2) 8 9/14 - х = 4 3/7; 3) х - 3 8/9 = 5 1/12.

1) х = 9 7/10 - 7 4/15 = 2 7/10 - 4/15 = 2 21/30 - 8/30 = 2 13/30;2) х = 8 9/14 - 4 3/7 = 4 9/14 - 3/7 = 4 9/14 - 6/14 = 4 3/14;3) х = 5 1/12 + 3 8/9 = 8 + 1/12 + 8/19 = 8 + (3+32)/36 = 8 35/36.