a) 3 1/3 = 2 4/3 3 1/3 - 2/3 = 2 4/3 - 2/3 = 2 2/3 b) 2 5/8 = 1 13/8 2 5/8 -7/8 = 1 13/8 - 7/8 = 1 6/8 = 1 3/4