Question: In Exercises 2138, solve each system of equations using matrices. Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. 3w - 4x + w + x

In Exercises 21–38, solve each system of equations using matrices. Use Gaussian elimination with back-substitution or Gauss-Jordan elimination. 3w - 4x + w + x - y + z =

3w - 4x + w + x - y + z = 9 y z=0 - 2w + x + 4y - 2z = 3 -w + 2x + y - 3z = 3

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