x-{y-2x+[3x-2(y+2x)+5y]}其中x=二分之一 y=-1 先化简在解
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![x-{y-2x+[3x-2(y+2x)+5y]}其中x=二分之一 y=-1 先化简在解](/uploads/image/z/10390762-10-2.jpg?t=x-%7By-2x%2B%5B3x-2%28y%2B2x%29%2B5y%5D%7D%E5%85%B6%E4%B8%ADx%3D%E4%BA%8C%E5%88%86%E4%B9%8B%E4%B8%80+y%3D-1+%E5%85%88%E5%8C%96%E7%AE%80%E5%9C%A8%E8%A7%A3)
x-{y-2x+[3x-2(y+2x)+5y]}其中x=二分之一 y=-1 先化简在解
x-{y-2x+[3x-2(y+2x)+5y]}其中x=二分之一 y=-1 先化简在解
x-{y-2x+[3x-2(y+2x)+5y]}其中x=二分之一 y=-1 先化简在解
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