#### Answer

$(3,-10)$
One solution

#### Work Step by Step

$-x+y = -13$
$3x-y=19$
$-x+y =-13$
$-x+y+x = -13 +x$
$y = x-13$
$3x-(x-13) = 19$
$3x-x+13 =19$
$2x + 13= 19$
$2x+13-13 = 19-13$
$2x = 6$
$2x/2=6/2$
$x = 3$
$-x+y = -13$
$-3 + y = -13$
$-3+y+3 = -13+3$
$y = -10$