求比值 80:24 0.5:0.2 0.15:21 36:18 13:91 3:12 1.01:101 21:24 36:72 20:40 89.5:2 10.5:21 3.14:28.26 41.23:4123 15:0.12 10:120 123:3 65:13 3:1 42:54化简比80:24 0.5:0.2 0.15:21 36:18 13:91 3:12 1.01:101 ...