用加减消元法解下列方程组.最好发图片!) (1){2x-5y=-21,4x+3y=23}用加减消元法解下列方程组.最好发图片!)(1){2x-5y=-21,4x+3y=23}(2){4x-3y=14,5x+3y=31}(3){4x+7y=-19,4x-5y=17}≧﹏≦求你了.
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![用加减消元法解下列方程组.最好发图片!) (1){2x-5y=-21,4x+3y=23}用加减消元法解下列方程组.最好发图片!)(1){2x-5y=-21,4x+3y=23}(2){4x-3y=14,5x+3y=31}(3){4x+7y=-19,4x-5y=17}≧﹏≦求你了.](/uploads/image/z/174091-67-1.jpg?t=%E7%94%A8%E5%8A%A0%E5%87%8F%E6%B6%88%E5%85%83%E6%B3%95%E8%A7%A3%E4%B8%8B%E5%88%97%E6%96%B9%E7%A8%8B%E7%BB%84.%E6%9C%80%E5%A5%BD%E5%8F%91%E5%9B%BE%E7%89%87%21%29+%281%29%EF%BD%9B2x-5y%3D-21%2C4x%2B3y%3D23%EF%BD%9D%E7%94%A8%E5%8A%A0%E5%87%8F%E6%B6%88%E5%85%83%E6%B3%95%E8%A7%A3%E4%B8%8B%E5%88%97%E6%96%B9%E7%A8%8B%E7%BB%84.%E6%9C%80%E5%A5%BD%E5%8F%91%E5%9B%BE%E7%89%87%21%29%281%29%EF%BD%9B2x-5y%3D-21%2C4x%2B3y%3D23%EF%BD%9D%282%29%EF%BD%9B4x-3y%3D14%2C5x%2B3y%3D31%EF%BD%9D%283%29%EF%BD%9B4x%2B7y%3D-19%2C4x-5y%3D17%EF%BD%9D%E2%89%A7%EF%B9%8F%E2%89%A6%E6%B1%82%E4%BD%A0%E4%BA%86.)
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用加减消元法解下列方程组.最好发图片!) (1){2x-5y=-21,4x+3y=23}用加减消元法解下列方程组.最好发图片!)(1){2x-5y=-21,4x+3y=23}(2){4x-3y=14,5x+3y=31}(3){4x+7y=-19,4x-5y=17}≧﹏≦求你了.
用加减消元法解下列方程组.最好发图片!) (1){2x-5y=-21,4x+3y=23}
用加减消元法解下列方程组.最好发图片!)
(1){2x-5y=-21,4x+3y=23}
(2){4x-3y=14,5x+3y=31}
(3){4x+7y=-19,4x-5y=17}
≧﹏≦求你了.
用加减消元法解下列方程组.最好发图片!) (1){2x-5y=-21,4x+3y=23}用加减消元法解下列方程组.最好发图片!)(1){2x-5y=-21,4x+3y=23}(2){4x-3y=14,5x+3y=31}(3){4x+7y=-19,4x-5y=17}≧﹏≦求你了.
用加减消元法解下列方程组:
3.用加减消元法解下列方程组
用加减消元法解下列方程组.最好发图片!) (1){2x-5y=-21,4x+3y=23}用加减消元法解下列方程组.最好发图片!)(1){2x-5y=-21,4x+3y=23}(2){4x-3y=14,5x+3y=31}(3){4x+7y=-19,4x-5y=17}≧﹏≦求你了.
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