4/15*3=12/15
2/15*10=4/3=
5/42*14=10/6=
4/15*45=36/3=12
2/9*2=4/9
4/100*45=36/20=9/5=
7/48*20=35/12=
7/51*17=7/3=
4/15*3=12/15
2/15*10=4/3=
5/42*14=10/6=
4/15*45=36/3=12
2/9*2=4/9
4/100*45=36/20=9/5=
7/48*20=35/12=
7/51*17=7/3=