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7/13乘6/29加6/13乘22/29的简便计算
人气:219 ℃ 时间:2019-10-11 12:32:25
解答
7/13乘6/29+6/13乘22/29
=6/13乘7/29+6/13乘22/29
=6/13乘(7/29+22/29)
=6/13乘1
=6/13
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