SOLUTION: what is the solution set x+y+z=19/9 2x+4y+2z=40/9 -x+9y-3z=-29/9

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Question 988389: what is the solution set
x+y+z=19/9
2x+4y+2z=40/9
-x+9y-3z=-29/9
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%2C1%2C1%2C%0D%0A2%2C4%2C2%2C%0D%0A-1%2C9%2C-3%29%29
abs%28A%29=-4
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abs%28A%5Bx%5D%29=-32%2F9
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abs%28A%5By%5D%29=-4%2F9
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abs%28A%5Bz%5D%29=-40%2F9
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x=abs%28A%5Bx%5D%29%2Fabs%28A%29=%28-32%2F9%29%2F%28-4%29=8%2F9
y=abs%28A%5By%5D%29%2Fabs%28A%29=%28-4%2F9%29%2F%28-4%29=1%2F9
z=abs%28A%5Bz%5D%29%2Fabs%28A%29=%28-40%2F9%29%2F%28-4%29=10%2F9