Answer
$\begin{bmatrix}1&5&6\\0&13&11\\4&7&0\end{bmatrix}$
Work Step by Step
Given matrix is $\begin{bmatrix}1&5&6\\-2&3&-1\\4&7&0\end{bmatrix}$
Row transformation is $R_{2}=2R_{1}+R_{2}$
Changed matrix is
$\begin{bmatrix}1&5&6\\2(1)+(-2)&2(5)+3&2(6)+(-1)\\4&7&0\end{bmatrix}=\begin{bmatrix}1&5&6\\0&13&11\\4&7&0\end{bmatrix}$
