SOLUTION: Solve by using elimination: x-y-2z=4 -x+2y+z=1 -x+y-3z=11 Please and thank you

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Question 1048258: Solve by using elimination:
x-y-2z=4
-x+2y+z=1
-x+y-3z=11
Please and thank you
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Solve by using elimination:
x-y-2z=4
-x+2y+z=1
-x+y-3z=11
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Eliminate x first.
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Add eqn 1, to eqn 2.
Then eqn 1 to eqn 3.