0.4:0.12 2/3:0.8 4/7:5/12化简比(要过程)

问题描述:

0.4:0.12 2/3:0.8 4/7:5/12化简比(要过程)

0.4:0.12
=40:12
=10:3
2/3:0.8
=2/3:4/5
=10:12
=5:6
4/7:5/12
=4/7x12/5
=48:35