4.5比2.52分之39化成比在化简比过程
人气:369 ℃ 时间:2019-10-19 09:20:19
解答
晓o鑫,
4.5:2.5
=(4.5×2):(2.5×2)
=9:5
39/52
=39:52
=(39÷13):(52÷13)
=3:4
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