(x+7)^2-(x+5)^2=6y
(y-2)^2-(y-6)^2=4x
x^2+14x+49-x^2-10x-25=6y
y^2-4y+4-y^2+12y-36=4x
4x=6y+9
8y-32=4x=6y+9
8y-6y-32-9=0
2y-41=0
2y=41
y=41/2
4x=6(41/2)+9
4x=246+9
4x=255
x=63.75
(x+7)^2-(x+5)^2=6y
(y-2)^2-(y-6)^2=4x
x^2+14x+49-x^2-10x-25=6y
y^2-4y+4-y^2+12y-36=4x
4x=6y+9
8y-32=4x=6y+9
8y-6y-32-9=0
2y-41=0
2y=41
y=41/2
4x=6(41/2)+9
4x=246+9
4x=255
x=63.75