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Using Gaussian elimination or Gauss-Jordan elimination, find the unknowns of the systems of equations below: a) x+ 2y - 3z - t = 0 -

Using Gaussian elimination or Gauss-Jordan elimination, find the unknowns of the systems of equations below:

a) x+ 2y - 3z - t = 0 - 3y + 2z + 6t = - 8 - 3x - y + 3z + t = 0 2x + 3y + 2z - t = - 8 b) 2x - y + 3z = 5 2x + 2y + 3z = 7 - 2x + 3y = - 3

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