SOLUTION: can someone help me pleae step by step. use the gauss-jordan method to solve 4x-3y+z+w = 21 -2x-y+2z+7w = 2 10x- 5z-20w = 15

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Question 83994: can someone help me pleae step by step.
use the gauss-jordan method to solve
4x-3y+z+w = 21
-2x-y+2z+7w = 2
10x- 5z-20w = 15
Answer by stanbon(57387) About Me  (Show Source):
You can put this solution on YOUR website!
Here is a site that will lead you thru an example
step-by-step.
http://aspire.cs.uah.edu/textbook/gauss.html
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Cheers,
Stan H.