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Use the indicated row operation to change matrix A, where 1-5-1 A= 6 1 5 7 5 5 1 Add -7 times row 1

Use the indicated row operation to change matrix A, where 1-5-1 A= 6 1 5 7 5 5 1 Add -7 times row 1 to row 3 of matrix A and place the result in row 3 to get 0 in row 3, column

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