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)]
化简 (1)(3x-5y)-2(x-4y) (2)3m-[2n-(m-3n)]
采纳哦
1.x+3y
2.4m+n
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