8 1/2 + 1 2/5 = 8.5 + 1.4 = 9.910 1/4 - 6 1/5 = 10.25 - 6.2 = 4.0511 5/8 + 8 101/125 = 11.625 + 8.808 = 20.43321 15/16 - 19 3/125 = 21.9375 - 19.024 = 2.9135
8 1/2 + 1 2/5 = 8.5 + 1.4 = 9.9
10 1/4 - 6 1/5 = 10.25 - 6.2 = 4.05
11 5/8 + 8 101/125 = 11.625 + 8.808 = 20.433
21 15/16 - 19 3/125 = 21.9375 - 19.024 = 2.9135