a: 5/9=40/72
7/8=63/72
b: 7/12=14/24
13/24=13/24
c: 9/16=18/32
17/32=17/32
d: 11/6=77/42
8/7=48/42
e: 5/6=20/24
11/24=11/24
f: 13/16=13/16
25/8=50/16
\(\text{a: 5/9=40/72 7/8=63/72 b: 7/12=14/24 13/24=13/24 c: 9/16=18/32 17/32=17/32 d: 11/6=77/42 8/7=48/42 e: 5/6=20/24 11/24=11/24 f: 13/16=13/16 25/8=50/16}\)