化简:169/26.1.25:13/6.8.1:0.9

问题描述:

化简:169/26.1.25:13/6.8.1:0.9
169/26.
1.25:13/6.
8.1:0.9

169/26.=13²/26=13/2
1.25:13/6.=5/4∶13/6=15∶26
8.1:0.9=9*0.9∶0.9=9