已知方程组{ 3x-y=5的解也是方程组{ax-2y=4}的解.则a=?,b=?,3a+2b=?{4x-7y=1 {3x-by=5}2,已知x=1,x=2都满足关于x二次方+px+q=o,则p=?Q=?3.k=?时,方程组{4x+3y=1}的解中x与y的值相等.{kx+(K-1)y=3如果(5a-7b++3)的二
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![已知方程组{ 3x-y=5的解也是方程组{ax-2y=4}的解.则a=?,b=?,3a+2b=?{4x-7y=1 {3x-by=5}2,已知x=1,x=2都满足关于x二次方+px+q=o,则p=?Q=?3.k=?时,方程组{4x+3y=1}的解中x与y的值相等.{kx+(K-1)y=3如果(5a-7b++3)的二](/uploads/image/z/1756703-47-3.jpg?t=%E5%B7%B2%E7%9F%A5%E6%96%B9%E7%A8%8B%E7%BB%84%7B+3x-y%3D5%E7%9A%84%E8%A7%A3%E4%B9%9F%E6%98%AF%E6%96%B9%E7%A8%8B%E7%BB%84%EF%BD%9Bax-2y%3D4%7D%E7%9A%84%E8%A7%A3.%E5%88%99a%3D%3F%2Cb%3D%3F%2C3a%2B2b%3D%3F%7B4x-7y%3D1+%7B3x-by%3D5%7D2%2C%E5%B7%B2%E7%9F%A5x%3D1%2Cx%3D2%E9%83%BD%E6%BB%A1%E8%B6%B3%E5%85%B3%E4%BA%8Ex%E4%BA%8C%E6%AC%A1%E6%96%B9%2Bpx%2Bq%3Do%2C%E5%88%99p%3D%3FQ%3D%3F3.k%3D%3F%E6%97%B6%2C%E6%96%B9%E7%A8%8B%E7%BB%84%7B4x%2B3y%3D1%7D%E7%9A%84%E8%A7%A3%E4%B8%ADx%E4%B8%8Ey%E7%9A%84%E5%80%BC%E7%9B%B8%E7%AD%89.%7Bkx%2B%28K-1%EF%BC%89y%3D3%E5%A6%82%E6%9E%9C%EF%BC%885a-7b%2B%2B3%EF%BC%89%E7%9A%84%E4%BA%8C)
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