SOLUTION: x+y+3z=-4 -x-y-2z=5 2x-z=-3 Work being shown

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Question 1048908: x+y+3z=-4
-x-y-2z=5
2x-z=-3
Work being shown
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
x+y+3z=-4
-x-y-2z=5
2x-z=-3
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Add Eqn 1 and Eqn 2.
etc.