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数学
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7.9*6.74-(7.43-0.69)*7.9的简便算法
要求写出基本计算过程
人气:460 ℃ 时间:2020-01-30 15:39:05
解答
7.9*6.74-(7.43-0.69)*7.9
=7.9*(6.74-(7.43-0.69))
=7.9*(6.74-6.74)
=7.9*0
=0
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