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1.73×1.3+0.27×1.3-1.3用简便方法计算
人气:250 ℃ 时间:2020-05-15 08:35:02
解答
1.73×1.3+0.27×1.3-1.3
=(1.73+0.27-1)×1.3
=1×1.3
=1.3
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