Question 346152
1.{{{x + 3y = 2}}}
2.{{{-x + y = 1}}}
Add the equations together.
{{{x+3y-x+y=2+1}}}
{{{4y=3}}}
{{{highlight(y=3/4)}}}
Then from eq. 2,
{{{-x+3/4=1}}}
{{{highlight(x=-1/4)}}}