4/(x+y)+6/(x-y)=3,9/(x-y)-1/(x+y)=1 解这个方程组
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![4/(x+y)+6/(x-y)=3,9/(x-y)-1/(x+y)=1 解这个方程组](/uploads/image/z/959198-14-8.jpg?t=4%2F%EF%BC%88x%2By%EF%BC%89%2B6%2F%EF%BC%88x-y%EF%BC%89%3D3%2C9%2F%EF%BC%88x-y%EF%BC%89-1%2F%EF%BC%88x%2By%EF%BC%89%3D1+%E8%A7%A3%E8%BF%99%E4%B8%AA%E6%96%B9%E7%A8%8B%E7%BB%84)
4/(x+y)+6/(x-y)=3,9/(x-y)-1/(x+y)=1 解这个方程组
4/(x+y)+6/(x-y)=3,9/(x-y)-1/(x+y)=1 解这个方程组
4/(x+y)+6/(x-y)=3,9/(x-y)-1/(x+y)=1 解这个方程组
令t=1/(x+y),s=1/(x-y).则原方程组化为4t+6s=3,9s-t=1,解这个方程组得t=1/6,s=1/2,于是x+y=6,x-y=2,解之得,x=4,y=2.