Question 149628: Solve the system:
x-y-z=1
-x-y+2z=-2
-x-3y+z=-5
Answer by Alan3354(69443)   (Show Source):
You can put this solution on YOUR website! Solve the system:
x-y-z=1
-x-y+2z=-2
-x-3y+z=-5
Using determinants:
X Y Z
1 -1 -1 1
-1 -1 2 -2
-1 -3 1 -5
Det = 4
X = 3
Y = 1
Z = 1
Other methods can be used, but I have an Excel sheet that does these using determinants. If you want another method, or more info on the Excel sheet, email me at gsihoutx@aol.com
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