SOLUTION: Solve for matrix method X-y+3z=2 2x+y+2z=2 -2x-2y+z=3

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Question 981376: Solve for matrix method
X-y+3z=2
2x+y+2z=2
-2x-2y+z=3
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use Cramer's rule,
A=%28matrix%283%2C3%2C%0D%0A1%2C-1%2C3%2C%0D%0A2%2C1%2C2%2C%0D%0A-2%2C-2%2C1%29%29
abs%28A%29=5
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A%5Bx%5D=%28matrix%283%2C3%2C%0D%0A2%2C-1%2C3%2C%0D%0A2%2C1%2C2%2C%0D%0A3%2C-2%2C1%29%29
abs%28A%5Bx%5D%29=-15
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A%5By%5D=%28matrix%283%2C3%2C%0D%0A1%2C2%2C3%2C%0D%0A2%2C2%2C2%2C%0D%0A-2%2C3%2C1%29%29
abs%28A%5By%5D%29=14
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A%5Bz%5D=%28matrix%283%2C3%2C%0D%0A1%2C-1%2C2%2C%0D%0A2%2C1%2C2%2C%0D%0A-2%2C-2%2C3%29%29
abs%28A%5Bz%5D%29=13
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x=abs%28A%5Bx%5D%29%2Fabs%28A%29=-15%2F5=-3
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y=abs%28A%5By%5D%29%2Fabs%28A%29=14%2F5
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z=abs%28A%5Bz%5D%29%2Fabs%28A%29=13%2F5
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