2/7
The lowest term of 7 over 6 is 11/6
18 over 21 in lowest terms is 6/7
that is in lowest terms
The GCF is 1. 6/5 is in its lowest term.
72 over 132 in lowest terms is 6/11
3 over 4
2 over 3
6 over 5
24 over 52 in lowest terms is 6/13
2/5 is the lowest term
1/4
5/6