SOLUTION: x-2y+z=11 3x+2y-z=7 x+2y+4z=9

Question 1095046: x-2y+z=11
3x+2y-z=7
x+2y+4z=9

Found 2 solutions by Alan3354, ikleyn:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
Do you have a question?
Answer by ikleyn(52824) (Show Source): You can put this solution on YOUR website!
.
To solve this system, start by adding the first and the second equations.

Then look what will happen.

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