问题描述:
化简下面各比.
20:8 36:2 102:68 1/3:4/5 3/7:5/21 4/15:4/25 0.32:0.8 1:0.25 1.35:9.25
288:192 240:160 192:128 144:96 96:64
20:8 36:2 102:68 1/3:4/5 3/7:5/21 4/15:4/25 0.32:0.8 1:0.25 1.35:9.25
288:192 240:160 192:128 144:96 96:64
问题解答:
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