1/4 + 1/2 + 0.5 = 0.25 + 0.5 + 0.5 = 1.25
7/15 + 2.8 = 0.46 + 2.8 = 3.26
3 17/20 - 2.7 = 3 + 17/20 - 2.7 = 3 + 0.85 - 2.7 = 3.15 - 2.7 = 0.45
1/4 + 1/2 + 0.5 = 0.25 + 0.5 + 0.5 = 1.25
7/15 + 2.8 = 0.46 + 2.8 = 3.26
3 17/20 - 2.7 = 3 + 17/20 - 2.7 = 3 + 0.85 - 2.7 = 3.15 - 2.7 = 0.45