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Answer:
![\left[\begin{array}c-6&3&-4\\0&-3&11\end{array}\right]](https://img.qammunity.org/2022/formulas/mathematics/college/f9advqu45kaiyrzdxf8wzxukrbd8qbwc4z.png)
Explanation:
The designated sum can replace either row. Consult your curriculum materials for the intent.
Here, we'll replace row 2 with the sum.
3(2, -2, 5) +(-6, 3, -4) = (3(2)-6, 3(-2)+3, 3(5)-4) = (0, -3, 11)
After the row operation replaces the second row, the augmented matrix is ...
![\left[\begin{array}cc-6&3&-4\\0&-3&11\end{array}\right]](https://img.qammunity.org/2022/formulas/mathematics/college/f9advqu45kaiyrzdxf8wzxukrbd8qbwc4z.png)