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(-7.33)×42.07+2.07×7.33 简便运算
人气:314 ℃ 时间:2020-02-01 06:38:52
解答
(-7.33)×42.07+2.07×7.33
= 7.33×(-42.07+2.07)
= 7.33×(-40)
= -293.2
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