化简 1.5/8:5 2.0.375:0.875 3.0.4:4/7

问题描述:

化简 1.5/8:5 2.0.375:0.875 3.0.4:4/7

1. 5/8:5=1:8
2. 0.375:0.875=3:7
3. 0.4:4/7=7:10