4/5 - 3/4 = 16/20 - 15/20 = 1/20
1/2 - 1/3 = 3/6 - 2/6 = 1/6
5/6 + 3/8 = 20/24 + 9/24 = 29/24 = 1 5/24
4/5 - 3/4 = 16/20 - 15/20 = 1/20
1/2 - 1/3 = 3/6 - 2/6 = 1/6
5/6 + 3/8 = 20/24 + 9/24 = 29/24 = 1 5/24