SOLUTION: solve the system of linear equations x+y=-6 -x+y=6

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Question 1000839: solve the system of linear equations
x+y=-6
-x+y=6
Found 2 solutions by ikleyn, MathTherapy:
Answer by ikleyn(52780) About Me  (Show Source):
You can put this solution on YOUR website!
solve the system of linear equations
x+y=-6
-x+y=6
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Add the first equation and the second.  You will get

2y = 0.

Hence,  y = 0.

Substitute it into the first equation.  You will get

x + 0 = -6,

x = -6.

Answer.   x = -6,  y = 0.


Answer by MathTherapy(10552) About Me  (Show Source):
You can put this solution on YOUR website!

solve the system of linear equations
x+y=-6
-x+y=6
highlight_green%28system%28x+=+-+6_and%2Cy+=+0%29%29