Question: Count the number of arithmetic operations needed to solve a system the old-fashioned way, by using elementary row operations of all three types, in the

Count the number of arithmetic operations needed to solve a system the "old-fashioned" way, by using elementary row operations of all three types, in the same order as the Gauss-Jordan scheme, to fully reduce the augmented matrix M = (A | b) to the form (I | d), with x = d being the solution.

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