1) x = 9 7/10 - 7 4/15 = 9 42/30 - 7 8/30 = 2 34/30 = 2 17/15.
2) x = 8 9/14 - 4 3/7 = 8 9/14 - 4 6/14 = 4 3/14.
3) x = 5 1/12 + 3 8/9 = 5 1/12 + 3 32/36 = 5 1/12 + 3 32/36 = 5 108/36 + 3 32/36 = 8 140/36 = 8 35/9.
1) x = 9 7/10 - 7 4/15 = 9 42/30 - 7 8/30 = 2 34/30 = 2 17/15.
2) x = 8 9/14 - 4 3/7 = 8 9/14 - 4 6/14 = 4 3/14.
3) x = 5 1/12 + 3 8/9 = 5 1/12 + 3 32/36 = 5 1/12 + 3 32/36 = 5 108/36 + 3 32/36 = 8 140/36 = 8 35/9.