No, it is at its lowest form.
30 over 42 can be reduced to 5/7
Yes, 27 over 30 can be reduced to 9 over 10.
7/11 cannot be reduced.
it can be reduced to 4 over 3
30/75 is reduced to 2/5.
11/15 cannot be reduced further.
It cannot be reduced.
15 over 30 reduced to lowest terms is 1/2
No.
No.
No
10/11 is in lowest terms and can't be further reduced.