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-0.21*-(4.58)-6.8*(-0.458)+(-0.011)*(-45.8)=?简便计算
人气:395 ℃ 时间:2020-05-19 00:57:28
解答
=0.21x4.58+0.68x4.58+0.11x4.58 =4.58(0.21+0.68+0.11) =4.58x1 =4.58
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