化简 (1)(3x-5y)-2(x-4y) (2)3m-[2n-(m-3n)]
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化简 (1)(3x-5y)-2(x-4y) (2)3m-[2n-(m-3n)]
![化简 (1)(3x-5y)-2(x-4y) (2)3m-[2n-(m-3n)]](/uploads/image/z/19168905-57-5.jpg?t=%E5%8C%96%E7%AE%80+%EF%BC%881%EF%BC%89%283x-5y%29-2%28x-4y%29+%EF%BC%882%EF%BC%893m-%5B2n-%EF%BC%88m-3n%EF%BC%89%5D)
采纳哦 再答: ![](http://img.wesiedu.com/upload/1/e1/1e10b84209cdf1deca3108de3b3358dc.jpg)
![](http://img.wesiedu.com/upload/1/e1/1e10b84209cdf1deca3108de3b3358dc.jpg)
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