Question 383053
1.{{{3x-y=-15}}}
2.{{{4x+5y=-1}}}
Multiply eq. 1 by 5 and add to eq. 2,
{{{15x-5y+4x+5y=-75-1}}}
{{{19x=-76}}}
{{{highlight(x=-4)}}}
Then use either equation to solve for {{{y}}}.
{{{3(-4)-y=-15}}}
{{{-12-y=-15}}}
{{{highlight(y=3)}}}