SOLUTION: Sovle the system for x, y and z: 2x+2y+3z=21 3x+y-z=-2 x+y+2z=13

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Question 833304: Sovle the system for x, y and z:
2x+2y+3z=21
3x+y-z=-2
x+y+2z=13
Found 2 solutions by Alan3354, TigerAlgebra:
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
You can use elimination.
I would eliminate y first.
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I prefer determinants.
You familiar with those?

Answer by TigerAlgebra(40) About Me  (Show Source):