Question: Use the indicated row operation to change matrix A, where 1. Add - 3 times row 1 to row 2 of matrix A and place

Use the indicated row operation to change matrix A, where

1. Add - 3 times row 1 to row 2 of matrix A and place the result in row 2 to get 0 in row 2, column 1.
2. Add - 4 times row 1 to row 3 of matrix A and place the result in row 3 to get 0 in row 3, column 1?

-2 -1 -7 3 1 2 2. L4

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