SOLUTION: Use the gauss-jordan method to solve this system of equation 4x + 4y - 4z = 24 2x - y + z = -9 x - 2y + 3z = 1 can you show me step by step how to solve this problem? Dia

Question 499212: Use the gauss-jordan method to solve this system of equation
4x + 4y - 4z = 24
2x - y + z = -9
x - 2y + 3z = 1
can you show me step by step how to solve this problem?
Diana
Found 2 solutions by Alan3354, emargo19:
Answer by Alan3354(69443) (Show Source): You can put this solution on YOUR website!
http://www.youtube.com/watch?v=CsTOUbeMPUo
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this is covered in great detail in many places.

Answer by emargo19(101) (Show Source): You can put this solution on YOUR website!
(eq1)
(eq2) multiply by -2

---------------------
(new eq)

(eq1)
(eq3) multiply by -4

So

----------------------
(New eq)

**Next use both new equations **
multiply by -2

gives these

---------------------

Substitute z=16 in eq 6y-6z=42

substitute y=23 and z=16 in equation 1.

Solution:(-1,23,16)

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