56:72=8/9
6:5分之3 =6x5/3=10
0.5:0.35=0.5/0.35=10/7化简比：4:5分之4,3.5:6.3,51:17会做的话我会多给你分的！4:5分之4=4x5/4=53.5:6 =3.5/6=7/1251:17 =51/17=3是3.5:6.33.5:6.3=5/9