SOLUTION: Solve the following variable using Cramer's Rule. Reduce fraction, if possible. -9x + 1y + 6z = -7 5x + 4y - 5z = -1 2x -8y - 2z = 8

Algebra ->  Algebra  -> Matrices-and-determiminant -> SOLUTION: Solve the following variable using Cramer's Rule. Reduce fraction, if possible. -9x + 1y + 6z = -7 5x + 4y - 5z = -1 2x -8y - 2z = 8      Log On

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Question 35030: Solve the following variable using Cramer's Rule. Reduce fraction, if possible.
-9x + 1y + 6z = -7
5x + 4y - 5z = -1
2x -8y - 2z = 8
Answer by longjonsilver(2297) About Me  (Show Source):
You can put this solution on YOUR website!
Look at my Lesson on how to use Cramer's rule. Basically you need to compute 4 3x3 determinants for each of the following:

+D+=+%28matrix%283%2C3%2C%0D%0A-9%2C+1%2C+6%2C%0D%0A5%2C+4%2C+-5%2C%0D%0A2%2C+-8%2C+-2%29%29+

+D%5Bx%5D+=+%28matrix%283%2C3%2C%0D%0A-7%2C+1%2C+6%2C%0D%0A-1%2C+4%2C+-5%2C%0D%0A8%2C+-8%2C+-2%29%29+

+D%5By%5D+=+%28matrix%283%2C3%2C%0D%0A-9%2C+-7%2C+6%2C%0D%0A5%2C+-1%2C+-5%2C%0D%0A2%2C+8%2C+-2%29%29+

+D%5Bz%5D+=+%28matrix%283%2C3%2C%0D%0A-9%2C+1%2C+-7%2C%0D%0A5%2C+4%2C+-1%2C%0D%0A2%2C+-8%2C+8%29%29+

Jon.