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Solve system of equations using matrices. Make a 4x4 matrix and get the diagonal to be...

Solve system of equations using matrices. Make a 4x4 matrix and get the diagonal to be ones and the rest of the numbers to be zeros

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

-x + y + 2z + w = 3

y -3z + 2w = - 5

2x + 2y -z -w = - 4

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