1)9/12=18/24=27/36=36/48=45/60.
2)2/3=4/6=6/9=8/12=10/15.
3)20/48=10/24=5/12=40/96=80/192.
4)18/36=9/18=2/4=1/2=3/6.
5)18/54=9/27=3/9=1/3=36/108.
6)4/5=8/10=16/20=32/40=64/80.
1)9/12=18/24=27/36=36/48=45/60.
2)2/3=4/6=6/9=8/12=10/15.
3)20/48=10/24=5/12=40/96=80/192.
4)18/36=9/18=2/4=1/2=3/6.
5)18/54=9/27=3/9=1/3=36/108.
6)4/5=8/10=16/20=32/40=64/80.