1- 1/3; 1-11/20; 4-1/9; 6-3/7; 1-3/4; 3-1/2; 5-2/5; 8-2/3.
2/3;9/20;3 8/9;5 4/7;1/4;2 1/2;4 3/5;7 1/3
1 - 1/3 = 2/3 1 - 11/20 = 9/20 4 - 1/9 = 3 8/9 6 - 3/7 = 5 4/7 1 - 3/4 = 1/4 3 - 1/2 = 2 1/2 5 - 2/5 = 4 3/5 8 - 2/3 = 7 1/3