SOLUTION: 3a - 2b + 7c = 13 a + 8b - 6c = -47 7a - 9b - 9c = -3

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Question 159200This question is from textbook Prentice Hall
: 3a - 2b + 7c = 13
a + 8b - 6c = -47
7a - 9b - 9c = -3 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.