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Which of the following is an elementary row operation that will produce a 0 in the (3,1) position of the augmented matrix 1 4 -1

Which of the following is an elementary row operation that will produce a 0 in the (3,1) position of the augmented matrix 1 4 -1 4 0 51 1 -6 1 2 4 OR3 - R2 X R3 OR3 - R3/ DR3 -> 6R1 + R3 OR3 7 R3 + 6 None of the choices listed

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