8 + 5 1/2 = 13 1/2
3 3/8 + 1/16 = 3 6/16 + 1/16 = 3 7/16
7 3/5 + 5 2/5 = 12 5/5 = 13
4 2/9 + 3 3/7 = 4 14/63 + 3 27/63 = 7 41/63
9 7/15 + 2 3/4 = 9 28/60 + 2 45/60= 11 73/60 = 12 13/60
8 + 5 1/2 = 13 1/2
3 3/8 + 1/16 = 3 6/16 + 1/16 = 3 7/16
7 3/5 + 5 2/5 = 12 5/5 = 13
4 2/9 + 3 3/7 = 4 14/63 + 3 27/63 = 7 41/63
9 7/15 + 2 3/4 = 9 28/60 + 2 45/60= 11 73/60 = 12 13/60