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36÷(36+0.9)怎样简便计算
和光剑合格
人气：491 ℃　时间：2020-04-14 07:55:39
解答
36÷(36+0.9)
=(36+0.9-0.9)÷36.9
=(36.9-0.9)÷36.9
=1-0.9÷36.9
=1-1/4.1
=3.1/4.1
=31/41
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