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化简(4x-2y)-﹛5x-[8y-2x-(x+y)]-x﹜
人气:122 ℃ 时间:2020-04-16 20:27:58
解答
(4x-2y)-﹛5x-[8y-2x-(x+y)]-x﹜
=4x-2y-5x+[8y-2x-x-y]+x
=-x-2y+8y-3x-y+x
=-3x+5y
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