Question 317273
{{{3x+5y=-11}}}
{{{x-2y=11}}}multiply this line by 3
{{{3x-6y=33}}}subtract this from first line
{{{11y=-44}}}
{{{y=-4}}}
{{{x-2(-4)=11}}}
{{{x+8=11}}}
{{{x=3}}}
(x,y)=(3,-4)