{x-y+xy=1,3x-y=4}和{x/2+y/2=2y,y=2x/3}哪个是二元一次方程组?
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![{x-y+xy=1,3x-y=4}和{x/2+y/2=2y,y=2x/3}哪个是二元一次方程组?](/uploads/image/z/813074-50-4.jpg?t=%EF%BD%9Bx-y%2Bxy%3D1%2C3x-y%3D4%EF%BD%9D%E5%92%8C%EF%BD%9Bx%2F2%2By%2F2%3D2y%2Cy%3D2x%2F3%EF%BD%9D%E5%93%AA%E4%B8%AA%E6%98%AF%E4%BA%8C%E5%85%83%E4%B8%80%E6%AC%A1%E6%96%B9%E7%A8%8B%E7%BB%84%3F)
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{x-y+xy=1,3x-y=4}和{x/2+y/2=2y,y=2x/3}哪个是二元一次方程组?
{x-y+xy=1,3x-y=4}和{x/2+y/2=2y,y=2x/3}哪个是二元一次方程组?
{x-y+xy=1,3x-y=4}和{x/2+y/2=2y,y=2x/3}哪个是二元一次方程组?
后面那个是.前面的式子x-y+xy=1中的xy是二次的,所以是二元二次方程.