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问一道数学题,急~~~(要简算)
48x0.69+3.1x4.8
人气:384 ℃ 时间:2020-02-03 11:40:08
解答
48x0.69+3.1x4.8
=48*0.69+0.31*48
=48*(0.69+0.31)
=48*1
=48
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