6（x-10）=y-10 (1)
2（x+10)=y+10 (2)
(1)-(2)
6(x-10)-2(x+10)=y-10-y-10
6x-60-2x-20=-20
4x=60
x=15
代入(1)
6(15-10)=y-10
y=30+10
所以x=15,y=40