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1.():3分之2=4分之3:2.0.3:7=14分之3:()
人气:150 ℃ 时间:2020-04-04 23:32:52
解答
1
():3分之2=4分之3:5分之1
()=2/3×3/4:1/5
=1/2×5
=5/2
2
0.3:7=14分之3:()
()=3/10:7×3/14
=3/10:3/2
=3/10×2/3
=1/5
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