$\left(\frac{13}{15}, -\frac{11}{5}\right)$

$4x + 16y - 18y + 3x = -36$
$x + 50y = 20$

$7x - 2y = -36$
$x = 20 - 50y$

$7(20 - 50y) - 2y = -36$

$y =\frac{1}{2}$

$\frac{x}{10}+5\left(\frac{1}{2}\right)=2$

$x = -5$

$\left(-5, \frac{1}{2}\right)$