Identify the elementary row operation being performed to obtain the new rowequivalent matrix.
$\begin{array} { l r } \text { Original Matrix } & \text { New Row-Equivalent Matrix } \ { \left[ \begin{array} { c c c } 7 & 6 & 6 \ 1 & 4 & - 6 \end{array} \right] } & { \left[ \begin{array} { c c c } 12 & 26 & - 24 \ 1 & 4 & - 6 \end{array} \right] } \end{array}$
A) Add 5 times $R _ { 1 }$ to $R _ { 2 }$.
B) Add $- 5$ times $R _ { 2 }$ to $R _ { 1 }$.
C) Add $- 5$ times $R _ { 1 }$ to $R _ { 2 }$.
D) Add 5 times $R _ { 1 }$ to $R _ { 1 }$.
E) Add 5 times $R _ { 2 }$ to $R _ { 1 }$.

Question

Quizplus · Accepted Answer

The operation performed is adding 5 times the second row $R_2$ to the first row $R_1$ to obtain the new first row.

Identify the Elementary Row Operation Being Performed to Obtain the New