Question 295495
1.{{{y=-1x-2}}}
2.{{{2x-3y=-9}}}
Use eq. 1 and substitute for y in eq.2, solve for x.
{{{2x-3y=-9}}}
{{{2x-3(-x-2)=-9}}}
{{{2x-(-3x-6)=-9}}}
{{{2x+3x+6=-9}}}
{{{5x=-15}}}
{{{x=-3}}}
Now use either eq. 1 or 2 to solve for y, eq. 1 is easier.
{{{y=-x-2=-(-3)-2=3-2=1}}}
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(-3,1)