z<y<0 x>0 化简/2x-y/ +/2y+z/ -/2x-y-z/ 【/ /表示绝对值】 2. 已知关于x的方程x/3-a+1=0的解比关于x的方程3x+三分之a-2=0 的解大3,求a的值及方程的解两道求出任意一道即可采纳,帮个忙可
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![z<y<0 x>0 化简/2x-y/ +/2y+z/ -/2x-y-z/ 【/ /表示绝对值】 2. 已知关于x的方程x/3-a+1=0的解比关于x的方程3x+三分之a-2=0 的解大3,求a的值及方程的解两道求出任意一道即可采纳,帮个忙可](/uploads/image/z/2011757-5-7.jpg?t=z%EF%BC%9Cy%EF%BC%9C0+++++++++x%EF%BC%9E0++++%E5%8C%96%E7%AE%80%2F2x-y%2F+%2B%2F2y%2Bz%2F+-%2F2x-y-z%2F+++%E3%80%90%2F+%2F%E8%A1%A8%E7%A4%BA%E7%BB%9D%E5%AF%B9%E5%80%BC%E3%80%91+++2.++%E5%B7%B2%E7%9F%A5%E5%85%B3%E4%BA%8Ex%E7%9A%84%E6%96%B9%E7%A8%8Bx%2F3-a%2B1%3D0%E7%9A%84%E8%A7%A3%E6%AF%94%E5%85%B3%E4%BA%8Ex%E7%9A%84%E6%96%B9%E7%A8%8B3x%2B%E4%B8%89%E5%88%86%E4%B9%8Ba-2%3D0+%E7%9A%84%E8%A7%A3%E5%A4%A73%2C%E6%B1%82a%E7%9A%84%E5%80%BC%E5%8F%8A%E6%96%B9%E7%A8%8B%E7%9A%84%E8%A7%A3%E4%B8%A4%E9%81%93%E6%B1%82%E5%87%BA%E4%BB%BB%E6%84%8F%E4%B8%80%E9%81%93%E5%8D%B3%E5%8F%AF%E9%87%87%E7%BA%B3%2C%E5%B8%AE%E4%B8%AA%E5%BF%99%E5%8F%AF)
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