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4.27×8.3+4.27×1.9-0.427×2.
人气:242 ℃ 时间:2020-03-29 05:06:56
解答
4.27×8.3+4.27×1.9-0.427×2
=4.27×8.3+4.27×1.9-4.27×0.2
=4.27×(8.3+1.9-0.2)
=4.27×10
=42.7
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