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数学
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把1,2,3,4,5,6.7,8,9,10,15,19分别填在括号里()+()=(),()-()=(),()*()=(),()*()=()
人气:114 ℃ 时间:2019-10-23 07:10:09
解答
(1)+(6)=(7)
(19)-(10)=(9)
(2)*(4)=(8)
(3)*(5)=(15)
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