SOLUTION: Can you please help with this equation; Using Cramer's rule solve the system of equations: { x + y + z= 6 and { 3 x - y + 2z = 7 } and { 3y - 4z = -6}

Algebra ->  Complex Numbers Imaginary Numbers Solvers and Lesson  -> Lesson -> SOLUTION: Can you please help with this equation; Using Cramer's rule solve the system of equations: { x + y + z= 6 and { 3 x - y + 2z = 7 } and { 3y - 4z = -6}      Log On


   

Question 965292: Can you please help with this equation; Using Cramer's rule solve the system of equations: { x + y + z= 6 and { 3 x - y + 2z = 7 } and { 3y - 4z = -6}
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
A=%28matrix%283%2C3%2C%0D%0A1%2C1%2C1%2C%0D%0A3%2C-1%2C2%2C%0D%0A0%2C3%2C-4%29%29
abs%28A%29=19
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A%5Bx%5D=%28matrix%283%2C3%2C%0D%0A6%2C1%2C1%2C%0D%0A7%2C-1%2C2%2C%0D%0A-6%2C3%2C-4%29%29
abs%28A%5Bx%5D%29=19
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A%5By%5D=%28matrix%283%2C3%2C%0D%0A1%2C6%2C1%2C%0D%0A3%2C7%2C2%2C%0D%0A0%2C-6%2C-4%29%29
abs%28A%5By%5D%29=38
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A%5Bz%5D=%28matrix%283%2C3%2C%0D%0A1%2C1%2C6%2C%0D%0A3%2C-1%2C7%2C%0D%0A0%2C3%2C-6%29%29
abs%28A%5Bz%5D%29=57
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x=abs%28A%5Bx%5D%29%2Fabs%28A%29=19%2F19=1
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y=abs%28A%5By%5D%29%2Fabs%28A%29=38%2F19=2
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z=abs%28A%5Bz%5D%29%2Fabs%28A%29=57%2F19=3
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