7 - 2 3/4 - (9 3/8 - 8 4/5) = 7- 2 3/4 - (9 15/40 - 8 32/40) = 7- 2 3/4 - ( 8 55/40 - 8 32/40) = 7- 2 3/4 - 23/40 = 6 4/4 - 2 3/4 - 23/40 = 4 1/4 - 23/40 = 4 10/40 - 23/40 = 3 50/40 - 23/40 = 3 27/40
