化简比 20:8 36:2 102/68 1/3:4/5 3/7:5/21 4/15:4/25 0
化简比
20:8
36:2
102/68
1/3:4/5
3/7:5/21
4/15:4/25
0.32:08
1:0.25
1.35:9.25