8:2/7 25:35 26:13 2/5:5/18 8/7:24先化简,再求比值2/5:4/15 5/6:5/18 8/7:24 对不起,打错了。

问题描述:

8:2/7 25:35 26:13 2/5:5/18 8/7:24先化简,再求比值
2/5:4/15 5/6:5/18 8/7:24 对不起,打错了。

8:2/7=56:2=28:1=28
25:35=5:7=5/7
26:13=2:1=2/1
2/5:5/18 =36:25=36/25
8/7:24=1/7:3=1:21=1/21

8:2/7=56/7:2/7=28:1=2825:35=5:7=5/726:13=2:1=22/5:5/18=36/90:25/90=36:25=36/258/7:24=8/7:168/7=8:168=1:21=1/21 接着解2/5:4/15=6/15:4/15=3:2=3/25/6:5/18=15/18:5/18=3:1=38/7:24=1/7:3=1:21=1/21 祝...