Question 370135
1.{{{3x+4y=5}}}
2.{{{2x+y=1}}}
Multiply eq. 2 by (-4) and add to eq. 1,
{{{3x+4y-8x-4y=5-4}}}
{{{-5x=1}}}
{{{highlight(x=-1/5)}}}
Then from eq. 2,
{{{2(-1/5)+y=1}}}
{{{-2/5+y=1}}}
{{{highlight(y=7/5)}}}