化简比,①七分之六比21

题目

化简比,①七分之六比21
①七分之六比21
②0.24比8

答案

6/7 :21
= 2 :7*7
= 2 :49
= 2/49
0.24 :8
= 24 :800
= 3 :100
=3/100