如果x+11-x的值和4+2x1-x互为相反数，那么x=______．-数学

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• 解方程：xx-2-2=3(x+2)2-x．-数学
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• 解方程：-九年级数学
• 解方程：-九年级数学
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• 解分式方程：-八年级数学
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• 解方程：-=1-九年级数学
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• 解方程：-九年级数学
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• 解方程：63x=52x-1-数学
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• 当时，分式的值等于.-七年级数学
• 解方程：x-6x-7+17-x=8-数学
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• 已知关于x的分式分程mx-1+31-x=2．（1）若方程的解为-2，求m的值；（2）若方程的解为正数，求出m的取值范围．-数学
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