Question 1024964
I think you're trying to solve this system of equations,
{{{2y+x=5}}}
{{{y=x-11}}}
Substitute the second into the first directly to eliminate y.
{{{2(x-11)+x=5}}}
{{{2x-22+x=5}}}
{{{3x=27}}}
Now solve for x.
Then go back and use the second equation to solve for y.