SOLUTION: solving systems by the addition method: x+ y = 10 2y=20-2x

Question 203184: solving systems by the addition method:
x+ y = 10
2y=20-2x
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
solving systems by the addition method:
x+ y = 10
2y=20-2x
----------------
Rewrite:
x + y = 10
y = 10 - x
------------------------
Rearrange:
x + y = 10
x + y = 10
-------------------
Obviously, the two equations are the same.
----------------------
Solution: All points of the form (x,10-x)
==============================================
Cheers,
Stan H.
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