SOLUTION: x + y + z = 6 2x - y + 3z = 9 -x + 2y +2z = 9

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Question 159202This question is from textbook Prentice Hall
: x + y + z = 6
2x - y + 3z = 9
-x + 2y +2z = 9 This question is from textbook Prentice Hall

Answer by midwood_trail(310) About Me  (Show Source):
You can put this solution on YOUR website!
This is not trigonometry.
What you have here is called a system of linear equations in 3 variables.
This is algebra and algebra alone.
Go here for the steps:
http://www.purplemath.com/modules/systlin6.htm
If you do not understand the link above, write back.