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52.5*0.63+3.7*5.25怎么用简便计算
人气:459 ℃ 时间:2020-04-15 20:45:17
解答
52.5*0.63+3.7*5.25
=52.5*0.63+0.37*52.5
=52.5*(0.63+0.37)
=52.5*1
=52.5
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