SOLUTION: Solve the system of equations x-y+z=-2 4x-y+2z=-3 2x-3y+2z=-7

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Question 334232: Solve the system of equations
x-y+z=-2
4x-y+2z=-3
2x-3y+2z=-7
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
[A]=%28matrix%283%2C3%2C1%2C-1%2C1%2C4%2C-1%2C2%2C2%2C-3%2C2%29%29
[x]=%28matrix%283%2C1%2Cx%2Cy%2Cz%29%29
[b]=%28matrix%283%2C1%2C-2%2C-3%2C-7%29%29
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[A][x]=[b]
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[x]=[A]inv[b]
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det[A]=-2
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[A]inv=%281%2F2%29%2A%28matrix%283%2C3%2C4%2C-1%2C-1%2C-4%2C0%2C2%2C-10%2C1%2C3%29%29
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[x]=%28matrix%283%2C1%2C-1%2C3%2C2%29%29