1) 5 7/13 + 8 = 13 7/13
2) 1/2 + 6 3/7 = 7/14 + 6 6/14 = 6 13/14
3) 6 + 4 9/11 = 10 9/11
4) 3 3/4 + 7/9 = 3 27/36 + 28/36 = 3 55/36 = 4 19/36
5) 2/9 + 1 8/15 = 10/45 + 1 24/45 = 1 34/45
6) 1\14 + 9 3/7 = 1/14 + 9 6/14 = 9 7/14 = 9 1/7
7) 9 + 4 5/6 = 13 5/6
8) 7 1/12 + 6 = 13 1/12
9) 5/7 + 3 1/4 = 20/28 + 3 7/28 = 3 27/28