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5/8X3/4十1/4X5/8十5/8怎样用简便计算?
人气:129 ℃ 时间:2020-07-31 17:44:00
解答
5/8X3/4十1/4X5/8十5/8
=5/8×(3/4+1/4+1)
=5/8×2
=5/4
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