SOLUTION: Solve for X, Y and Z using Matrices. I have tried over 20 times to get this; and I'm just not getting it. Thank you for your help. x - y - 2z = -1 x + 2y + z = 5 5x + 4y - z = 1

Algebra ->  Matrices-and-determiminant -> SOLUTION: Solve for X, Y and Z using Matrices. I have tried over 20 times to get this; and I'm just not getting it. Thank you for your help. x - y - 2z = -1 x + 2y + z = 5 5x + 4y - z = 1      Log On


   



Question 548291: Solve for X, Y and Z using Matrices. I have tried over 20 times to get this; and I'm just not getting it. Thank you for your help.
x - y - 2z = -1
x + 2y + z = 5
5x + 4y - z = 13

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
There's no unique solution.
The 2nd column = the sum of the 1st & 3rd --> dependent.