Question 999991
{{{system(4x+y=11,2x=1-5y)}}}


{{{system(4x+y=11,4x=2-10y)}}}


{{{(2-10y)+y=11}}}, substituted 4x
{{{-9y=11-2}}}
{{{-9y=9}}}
{{{y=-1}}}


Back to original second equation
{{{2x+5*(-1)=1}}}
{{{2x=1+5}}}
{{{2x=6}}}
{{{x=3}}}


x=3 and y=-1