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整体去括号；[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)

分类: 作业答案 • 2022-01-09 18:01:39
问题描述：

整体去括号；[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)
化简

答

[5(x-y)-3(x-y)-(x-y)+2(x-y)]-2(x-y)
=[3(x-y)]-2(x-y)
=x-y

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