化简下列各比,并求出比值80:24,0.5:0.2,0.15:21,36:18
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化简下列各比,并求出比值80:24,0.5:0.2,0.15:21,36:18
化简下列各比,并求出比值80:24,0.5:0.2,0.15:21,36:18
化简下列各比,并求出比值80:24,0.5:0.2,0.15:21,36:18
10:3,5:2,1:140,2:1
10:3,5:2,1:140,2:1