SOLUTION: by elimination x – 3y + 4z = –9 2x + y + 3z = 6 x – 4y + 3z = –9

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Question 549049: by elimination
x – 3y + 4z = –9
2x + y + 3z = 6
x – 4y + 3z = –9
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Subtract Eqn 3 from Eqn 1. --> eqn in y & z
Subtract 2 times Eqn 3 from Eqn 2. --> another eqn in y & z
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2 eqns in y & z
Can you finish it?