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1.56*6.8+2.4*1.56+9.2*0.44
人气:365 ℃ 时间:2019-12-02 15:53:49
解答
1.56*6.8+2.4*1.56+9.2*0.44
=1.56*(6.8+2.4)+9.2*0.44
=1.56*9.2+9.2*0.44
=9.2*(1.56+044)
=9.2*2
=18.4
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