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![联立二元一次方程(列式)(使用加减消元法)1.{2x-5y=194x-3y=32.{8x-3y=3112x+5y=-13.{3x-7y=-154y-3x=64.{2y-5x=03x-4y=28](/uploads/image/z/3619924-52-4.jpg?t=%E8%81%94%E7%AB%8B%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%28%E5%88%97%E5%BC%8F%29%EF%BC%88%E4%BD%BF%E7%94%A8%E5%8A%A0%E5%87%8F%E6%B6%88%E5%85%83%E6%B3%95%EF%BC%891.%EF%BD%9B2x-5y%3D194x-3y%3D32.%EF%BD%9B8x-3y%3D3112x%2B5y%3D-13.%EF%BD%9B3x-7y%3D-154y-3x%3D64.%EF%BD%9B2y-5x%3D03x-4y%3D28)
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