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数学
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化简67×66分之65,12分之5÷9+12分之5÷8分之9
人气:103 ℃ 时间:2020-05-13 04:13:00
解答
=(66+1)*(65/66)
=65+(65/66)
=65又65分之66
=(5/12)*(1/9)+(5/12)*(8/9)
=(5/12)*1
=5/12
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