SOLUTION: Solve system of linear equations, using matrix method. x − y +2z =7 3x +4y −5z =−5 2x − y + 3z = 12

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Question 1099576: Solve system of linear equations, using matrix method.
x − y +2z =7
3x +4y −5z =−5
2x − y + 3z = 12
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A=%28matrix%283%2C3%2C%0D%0A1%2C-1%2C2%2C%0D%0A3%2C4%2C-5%2C%0D%0A2%2C-1%2C3%29%29
abs%28A%29=4
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A%5Bx%5D=%28matrix%283%2C3%2C%0D%0A7%2C-1%2C2%2C%0D%0A-5%2C4%2C-5%2C%0D%0A12%2C-1%2C3%29%29
abs%28A%5Bx%5D%29=8
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A%5By%5D=%28matrix%283%2C3%2C%0D%0A1%2C7%2C2%2C%0D%0A3%2C-5%2C-5%2C%0D%0A2%2C12%2C3%29%29
abs%28A%5By%5D%29=4
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A%5Bz%5D=%28matrix%283%2C3%2C%0D%0A1%2C-1%2C7%2C%0D%0A3%2C4%2C-5%2C%0D%0A2%2C-1%2C12%29%29
abs%28A%5Bz%5D%29=12
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x=abs%28A%5Bx%5D%29%2Fabs%28A%29=8%2F4=2
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y=abs%28A%5By%5D%29%2Fabs%28A%29=4%2F4=1
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z=abs%28A%5Bz%5D%29%2Fabs%28A%29=12%2F4=3
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