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Use Gaussian elimination with backward substitution to solve the system of linear equations. x+y-z=-4 -x-4y+4z=1 -4x-3y+2z=15...

Use Gaussian elimination with backward substitution to solve the system of linear equations.

x+y-z=-4

-x-4y+4z=1

-4x-3y+2z=15

What is the solution set?

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