Given the matrices in Problems 24-27, perform elementary row operations to obtain a 1 in the second

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Given the matrices in Problems 24-27, perform elementary row operations to obtain a 1 in the second row, second column without changing the entries in the first column.

\([D]=\left[\begin{array}{rrr:r}1 & 3 & -2 & 0 \\ 0 & 4 & 2 & 9 \\ 0 & 3 & 6 & 1\end{array}ight] \)

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