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21*(1+90%)/8分之3-106.4
人气:115 ℃ 时间:2020-02-15 08:52:12
解答
21*(1+90%)/8分之3-106.4
=21*1.1*8/3-106.4
=23.1*8/3-106.4
=61.6-106.4
=-44.8
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