Question 356377
1.{{{3x+2y=7}}}
2.{{{y=-3x+11}}}
Substitute eq. 2 into eq. 1,
{{{3x+2(-3x+11)=7}}}
{{{3x-6x+22=7}}}
{{{-3x=-15}}}
{{{highlight(x=5)}}}
Then from eq. 2,
{{{y=-3(5)+11}}}
{{{y=-15+11}}}
{{{highlight(y=-4)}}}