17/52 cannot be reduced further.
28/52 = 7/13
It is: 22/52 = 11/27
Yes.
30 over 42 can be reduced to 5/7
13/52=1/4 since 13x4=52
Yes, 27 over 30 can be reduced to 9 over 10.
1/13
it can be reduced to 4 over 3
30/75 is reduced to 2/5.
4/13
30/52 = 15/2615/26