which comes next
1/3, 4/9, 5/9 -----
4/40, 2/5,
3/7, 8/14, 5/7
choices
2/3, 1/5, 36/42, 8/28,
6/9 is 2/3 if that is what you are asking.
I have no idea what the second and third lines are about
4/40 is 1/10
2/5 is 4/10
maybe 7/10 is next ?
3/7 is 6/14
8/14 is 8/14
5/7 is 10/14
so next would be 12/14 = 6/7