3 i 1/3 - 2/3=2 i ?/3 - 2/3= 2 i 3/5 - 4/5 = 1 i ?/5 - 4/5 = 8 i 4/7 - 6/7 = 7 i ?/7 - 6/7 = 6 i 5/9 - 8/9 = 5 i ?/9 - 8/9 =

3 i 1/3 - 2/3=2 i 4/3 - 2/3= 2 i 2/3 2 i 3/5 - 4/5 = 1 i 8/5 - 4/5 = 1 i 4/5 8 i 4/7 - 6/7 = 7 i 11/7 - 6/7 = 7 i 5/7 6 i 5/9 - 8/9 = 5 i 14/9 - 8/9 = 5 i 6/9 = 5 i 2/3