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75*0.25-2.75/4怎么简算
人气:223 ℃ 时间:2020-05-27 08:47:50
解答
6.75*0.25-2.75/4
=6.75*0.25-2.75*0025
=(6.75-2.75)*0.25
=4*0.25
=1
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