Determine whether the following matrices are in echelon form, reduced echelon form or not in echelon form. -8 1 1 ot in Echelon Form 1 -3 -5 [9 1 chelon Form 1 1 [0 1 7 chelon Form 0 0 1 -5 1 0 3 0 0 0 chelon Form 1 0 -4 0 0 1

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