Question: Matrix A [-1 5 -4] The identity Matrix [1 0 0] How do you indicate the row operation for each new matrix to [0 -7

Matrix A [-1 5 -4] The identity Matrix [1 0 0] How do you indicate the row operation for each new matrix to

[0 -7 2] [0 1 0] get the matrix on the right to then be the inverse matrix?

[2 -6 7] [0 0 1] I genuinely understand the process, I do not understand how to pick out the correct operation for each matrix

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