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28.9*61.3+111*6.15简便计算
人气:235 ℃ 时间:2020-03-24 12:23:28
解答
=28.9*61.3+11.1*61.3+11.1*0.2
=61.3(28.9+11.1)+2.22
=61.3*40+2.22
=2454.22
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