二元一次方程组 3m+2n=5m+2 2(3m+2n)=11m+73m+2n=5m+22(3m+2n)=11m+7对了,最好是代入法
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![二元一次方程组 3m+2n=5m+2 2(3m+2n)=11m+73m+2n=5m+22(3m+2n)=11m+7对了,最好是代入法](/uploads/image/z/1544350-22-0.jpg?t=%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%BB%84+3m%2B2n%3D5m%2B2+2%283m%2B2n%29%3D11m%2B73m%2B2n%3D5m%2B22%283m%2B2n%29%3D11m%2B7%E5%AF%B9%E4%BA%86%EF%BC%8C%E6%9C%80%E5%A5%BD%E6%98%AF%E4%BB%A3%E5%85%A5%E6%B3%95)
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