化成最简整数比.把过程给全了 60:32 0.45:0.2 3/7:9/14 1.25:1 3/4:0.6 1/8千克：

60:32
=60/4:32/4
=15:8
0.45:0.2
=45:20
=45/5:20/5
=9:4
3/7:9/14
=3/7×14/9
=2/3
=2:3
1.25:1
=1.25x4:1x4
=5:4
3/4:0.6
=3/4×5/3
=5/4
=5:4
1/8千克：500克
=125克：500克
=125:500
=1:4