若直线y=3x+6与y=2x-4的交点坐标为(a,b),则x=a,y=b是()选项中方程组的解选项:A.y-3x=6 B.y-3x=6 C.3x-y=6 D.3x-y=-62y-x=-4 2x-y=4 3x-y=4 2x-y=-4
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![若直线y=3x+6与y=2x-4的交点坐标为(a,b),则x=a,y=b是()选项中方程组的解选项:A.y-3x=6 B.y-3x=6 C.3x-y=6 D.3x-y=-62y-x=-4 2x-y=4 3x-y=4 2x-y=-4](/uploads/image/z/7104154-58-4.jpg?t=%E8%8B%A5%E7%9B%B4%E7%BA%BFy%3D3x%2B6%E4%B8%8Ey%3D2x-4%E7%9A%84%E4%BA%A4%E7%82%B9%E5%9D%90%E6%A0%87%E4%B8%BA%EF%BC%88a%2Cb%EF%BC%89%2C%E5%88%99x%3Da%2Cy%3Db%E6%98%AF%EF%BC%88%EF%BC%89%E9%80%89%E9%A1%B9%E4%B8%AD%E6%96%B9%E7%A8%8B%E7%BB%84%E7%9A%84%E8%A7%A3%E9%80%89%E9%A1%B9%EF%BC%9AA.y-3x%3D6+B.y-3x%3D6+C.3x-y%3D6+D.3x-y%3D-62y-x%3D-4+2x-y%3D4+3x-y%3D4+2x-y%3D-4)
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