25. When $m=-5,-4,-3,-1,0,1,3,23,124,1000$, from $(2 m+1) x+(2-3 m) y+1-5 m=0$ we get 10 linear equations in two variables $x$ and $y$. The common solution to these 10 equations is $x=$ $\qquad$ $y=$ $\qquad$.
Answer: $1,-1$