<PRE><B>Question 87897</B>
Just add the two equations together:


3x -y =-7
x + y = -9 
-----------
4x = -16

x=-4


Substitute the x=-4 back into either equation.  The second equation will be easier:


x+y=-9
-4 +y = -9

Add +4 to each side:
-4+y+4=-9+4
y=-5


The solution is the point x=-4, y=-5 or (-4,-5).


R^2  Retired from SCC</PRE>