Question 367723
{{{3x+3y=-15}}}
1.{{{x+y=-5}}}
.
.
{{{2x-4y=32}}}
2.{{{x-2y=16}}}
Subtract eq. 1 from eq. 2,
{{{x-2y-x-y=16-(-5)}}}
{{{-3y=21}}}
{{{highlight(y=-7)}}}
Then from eq. 1,
{{{x-7=-5}}}
{{{highlight(x=2)}}}