SOLUTION: solve the linear system by gaus jordan x+2y+3z=9 2x-y+z=8 3x-z=3

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Question 1062932: solve the linear system by gaus jordan
x+2y+3z=9
2x-y+z=8
3x-z=3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!

Add R%5B2%5D and R%5B3%5D and replace in R%5B3%5D,

Replace R%5B2%5D with R%5B1%5D-3R%5B2%5D,

Replace R%5B3%5D with R%5B2%5D%2B5R%5B3%5D,

So then from R%5B3%5D,
20x=40
x=2
Then from R%5B2%5D
-5%282%29%2B5y=-15
5y=-5
y=-1
and then from R%5B1%5D,
2%2B2%28-1%29%2B3z=9
3z=9
z=3