### Question Description

Solve the following system of equations using matrices. Use Gaussian elimination with back substitution or Gauss-Jordan elimination. x + 2y = z -1, x = 4 + y - z, x + y - 3z = -2

A. {(3, -1, 0)}

B. {(2, -1, 0)}

C. {(3, -2, 1)}

D. {(2, -1, 1)}

## Explanation & Answer

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Correct answer is:

D. {(2, -1, 1)}

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