$$x+y=4/2x-y=2NKSHA$$
$x+y=2x-y\text{ and }2x-y=2AHKNS$
$x=\frac{4AHKNS}{3}$
$y=\frac{2AHKNS}{3}$
$y=\frac{2AHKNS}{3}$
$x=\frac{4AHKNS}{3}$
