SOLUTION: 3x1-2x4=1 2x2-2x3+x4=2 -3x1+3x2-2x3+2x4=3 6x1+x2+x4=4

Algebra ->  Matrices-and-determiminant -> SOLUTION: 3x1-2x4=1 2x2-2x3+x4=2 -3x1+3x2-2x3+2x4=3 6x1+x2+x4=4      Log On


   

Question 1020897: 3x1-2x4=1
2x2-2x3+x4=2
-3x1+3x2-2x3+2x4=3
6x1+x2+x4=4
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Use Cramer's rule,

abs%28A%29=36
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abs%28A%5Bx1%5D%29=12
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abs%28A%5Bx2%5D%29=72
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abs%28A%5Bx3%5D%29=36
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abs%28A%5Bx4%5D%29=0
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x%5B1%5D=abs%28A%5Bx1%5D%29%2Fabs%28A%29=12%2F36=1%2F3
x%5B2%5D=abs%28A%5Bx2%5D%29%2Fabs%28A%29=72%2F36=2
x%5B3%5D=abs%28A%5Bx3%5D%29%2Fabs%28A%29=36%2F36=1
x%5B4%5D=abs%28A%5Bx4%5D%29%2Fabs%28A%29=0%2F36=0