SOLUTION: 2x+y+z=1 x-2y-3z=1 3x+2y+4z=5 to solve from matrix methode

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Question 370359: 2x+y+z=1
x-2y-3z=1
3x+2y+4z=5
to solve from matrix methode
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%283%2C3%2C2%2C1%2C1%2C1%2C-2%2C-3%2C3%2C2%2C4%29%29
[x]=%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29
[b]=%28matrix%283%2C1%2C1%2C1%2C5%29%29
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det[A]=-9
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[A]inv=-%281%2F9%29%2A%28matrix%283%2C3%2C-2%2C-2%2C-1%2C-13%2C5%2C7%2C8%2C-1%2C-5%29%29
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[x]=%28matrix%283%2C1%2C1%2C-3%2C2%29%29