13:1/2 7/8:14 4/7:5/12的比值(要过程)

问题描述:

13:1/2 7/8:14 4/7:5/12的比值(要过程)

13:1/2 7/8:14
=26:1 =7/8:14/1
=112:7
4/7:5/12
=35:48