( 6 5/8 - 1/2 ) - (5 3/4 - 2 1/6) + (9 5/8 - 7 1/3)= 4 5/6
1) 6 5/8 - 1/2 = 6 5/8 - 4/8= 6 1/8
2) 5 3/4 - 2 1/6 = 5 9/12 - 2 2/12 = 3 7/12
3) 9 5/8 - 7 1/3 = 9 15/24 - 7 8/24 = 2 7/24
4) 6 1/8 - 3 7/12 = 6 3/24 - 3 14/24 = 2 13/24
5) 2 13/24 + 2 7/24 = 4 20/24 = 4 5/6