4 14/19 - 2 5/19 = 2 9/19
8 7/10 - 5 = 3 7/10
12 - 7/18 = 11 11/18
11 - 3 5/12 = 7 7/12
8 7/15 - 3 11/15 = 5 - 4/15 = 4 11/15
10 9/14 - 3 9/14 = 7
4 14/19 - 2 5/19 = 2 9/19
8 7/10 - 5 = 3 7/10
12 - 7/18 = 11 11/18
11 - 3 5/12 = 7 7/12
8 7/15 - 3 11/15 = 5 - 4/15 = 4 11/15
10 9/14 - 3 9/14 = 7