36/45=(9*4)/(9*5)=4/5
35/56=(7*5)/(7*8)=5/8
26/39=(13*2)/(13*3)=2/3
55/66=(5*11)/(6*11)=5/6
48/84=(12*4)/(12*7)=4/7
35/77=(7*5)/(7*11)=5/11
15/55=(5*3)/(5*11)=3/11
32/96=32/(32*3)=1/3
81/90=(9*9)/(9*10)=9/10
66/84=(6*11)/(6*14)=11/14
84/96=(12*7)/(12*8)=7/8
39/52=(13*3)/(13*4)=3/4
25/90=(5*5)/(5*18)=5/18
15/20=(5*3)/(5*4)=3/4
18/27=(9*2)/(9*3)=2/3
28/35=(7*4)/(7*5)=4/5