2022-11-19 04:03发布
0.8:1/2=(0.8×10):(1/2×10)=8:58:5=8/5=1又3/5（或1.6）零点八:2分之一的比为8:5，比值是1.60.8:1/2=(0.
0.8:1/2=(4/5)/(1/2)=8/5或8:5
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0.8:1/2=(4/5)/(1/2)=8/5或8:5
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