数学代入消元法解下列联立方程第一题代入消元法2x-3y=1.(1)4x-2y=5.(2)第二题代入消元法5x+3y+6=0.(1)3x-2y-23=0.(2)第三题代入消元法5x-3y-11=4x-7y-18=0第4题代入消元法2(x+y)-3x=4.(1)3(x-y)+5y=12.(2)第五题代入
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![数学代入消元法解下列联立方程第一题代入消元法2x-3y=1.(1)4x-2y=5.(2)第二题代入消元法5x+3y+6=0.(1)3x-2y-23=0.(2)第三题代入消元法5x-3y-11=4x-7y-18=0第4题代入消元法2(x+y)-3x=4.(1)3(x-y)+5y=12.(2)第五题代入](/uploads/image/z/5180266-10-6.jpg?t=%E6%95%B0%E5%AD%A6%E4%BB%A3%E5%85%A5%E6%B6%88%E5%85%83%E6%B3%95%E8%A7%A3%E4%B8%8B%E5%88%97%E8%81%94%E7%AB%8B%E6%96%B9%E7%A8%8B%E7%AC%AC%E4%B8%80%E9%A2%98%E4%BB%A3%E5%85%A5%E6%B6%88%E5%85%83%E6%B3%952x-3y%3D1.%281%294x-2y%3D5.%282%29%E7%AC%AC%E4%BA%8C%E9%A2%98%E4%BB%A3%E5%85%A5%E6%B6%88%E5%85%83%E6%B3%955x%2B3y%2B6%3D0.%281%293x-2y-23%3D0.%282%29%E7%AC%AC%E4%B8%89%E9%A2%98%E4%BB%A3%E5%85%A5%E6%B6%88%E5%85%83%E6%B3%955x-3y-11%3D4x-7y-18%3D0%E7%AC%AC4%E9%A2%98%E4%BB%A3%E5%85%A5%E6%B6%88%E5%85%83%E6%B3%952%28x%2By%29-3x%3D4.%281%293%28x-y%29%2B5y%3D12.%282%29%E7%AC%AC%E4%BA%94%E9%A2%98%E4%BB%A3%E5%85%A5)
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