Question 154842
1.{{{2x+y=18}}}
2.{{{2x-y=22}}}
Add eq. 1 to eq. 2 to get rid of y.
{{{(2x+y)+(2x-y)=18+22}}}
{{{4x=40}}}
{{{highlight(x=10)}}}
Now go to either 1 or 2 and solve for y.
I'll choose 1.
1.{{{2x+y=18}}}
{{{2(10)+y=18}}}
{{{20+y=18}}}
{{{highlight(y=-2)}}}