SOLUTION: The given system of linear equations has a unique solution 2x + y- z = -5 -5x - 3y + 2z = 7 x + 4y - 3z = 0 what is the value of x?

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Question 1097284: The given system of linear equations has a unique solution
2x + y- z = -5
-5x - 3y + 2z = 7
x + 4y - 3z = 0
what is the value of x?

Answer by KMST(5328)   (Show Source): You can put this solution on YOUR website!
Multiplying 2x + y- z = -5 times -1 gives you -2x - y+ z = 5
If you add that and the other two equations, you get
-2x - y + z = 5
-5x - 3y + 2z = 7
x + 4y - 3z = 0
-----------------
-6x + 0y + 0z = 12
That is
---> ---> .

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