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1-10*(1/12)/(1/30) 怎么算
人气:485 ℃ 时间:2020-05-13 01:10:53
解答
1-10*(1/12)/(1/30)
=1-10*(1/12)*30
=1-300/12
=12/12-300/12
=-288/12
=-24
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