72 over 132 reduced to lowest terms is 6/11
That's the lowest it can be reduced already. 6/13.
6/13 is in lowest terms and can't be reduced.
It is: 4/6 = 2/3 reduced
5/6
2/3
3/4
3 over 4
6/8 = 3/4
The fraction 6/25 cannot be reduced any more.
1/2
2/7 is the best fraction