Question 238509
Use eq. 2, 
{{{y=4x+22}}}
Substitute into eq. 1, but simplify eq. 1 first,
{{{9x+9y=-27}}}
{{{x+y=-3}}}
{{{x+(4x+22)=-3}}}
{{{5x+22=-3}}}
{{{5x=-25}}}
{{{x=-5}}}
Use either eq. to find y.
{{{y=4x+22}}}
{{{y=4(-5)+22}}}
{{{y=2}}}
(x,y)=(-5,2)