Để giải bài toán này, ta sẽ giải hệ phương trình:
-x + k + y/x = k - y + x/y
k - y + x/y = -k + x + y/k
Từ phương trình thứ nhất, ta có:
-x + k + y/x = k - y + x/y
-x + k + y/x = k - y + x/y
-x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y
=> -x + k + y/x = k - y + x/y