Perform the indicated elementary row operations.
-$\begin{array}{l}
\text { (6) } \mathrm{R}_{2}+\mathrm{R}_{3}\
\left[\begin{array}{rrr}
-3 & 7 & 1 \
3 & 5 & -10 \
10 & 8 & -5
\end{array}\right]
\end{array}$

A)$\left[\begin{array}{rrr}
-3 & 7 & 1 \
63 & 53 & -40 \
10 & 8 & -5
\end{array}\right]$

B)$\left[\begin{array}{rrr}
-3 & 7 & 8 \
3 & 5 & -5 \
10 & 8 & 3
\end{array}\right]$

C)$\left[\begin{array}{rrr}
-3 & 7 & 43 \
3 & 5 & 20 \
10 & 8 & 43
\end{array}\right]$

D)$\left[\begin{array}{rrr}
-3 & 7 & 1 \
3 & 5 & -10 \
28 & 38 & -65
\end{array}\right]$

Question

Perform the indicated elementary row operations.
-$\begin{array}{l}
\text { (6) } \mathrm{R}_{2}+\mathrm{R}_{3}\
\left[\begin{array}{rrr}
-3 & 7 & 1 \
3 & 5 & -10 \
10 & 8 & -5
\end{array}\right]
\end{array}$

A)$\left[\begin{array}{rrr}
-3 & 7 & 1 \
63 & 53 & -40 \
10 & 8 & -5
\end{array}\right]$

B)$\left[\begin{array}{rrr}
-3 & 7 & 8 \
3 & 5 & -5 \
10 & 8 & 3
\end{array}\right]$

C)$\left[\begin{array}{rrr}
-3 & 7 & 43 \
3 & 5 & 20 \
10 & 8 & 43
\end{array}\right]$

D)$\left[\begin{array}{rrr}
-3 & 7 & 1 \
3 & 5 & -10 \
28 & 38 & -65
\end{array}\right]$

Quizplus · Accepted Answer

Adding $R_2$ to $R_3$ modifies only the third row, resulting in new values for $R_3$ by adding corresponding elements of $R_2$ and $R_3$. The correct operation yields $R_3 = (10+3, 8+5, -5-10) = (13, 13, -15)$, but none of the options match this exactly due to a mistake in the interpretation of the question. The closest correct operation based on the options provided and the intended operation is option D, which reflects an addition but with incorrect values. This highlights an error in the question's interpretation or in the provided options.

Perform the Indicated Elementary Row Operations A) [−3716353−40108−5]\left[\begin{array}{rrr}-3 & 7 & 1 \\63 & 53 & -40 \\10 & 8 & -5\end{array}\right]​−36310​7538​1−40−5​​

Perform the Indicated Elementary Row Operations A) $\left[\begin{array}{rrr}-3 & 7 & 1 \\63 & 53 & -40 \\10 & 8 & -5\end{array}\right]$