How do you create the arrows indicating matrix row operations in a non-array environment? I'm trying to have the same output as: [![row arrow](https://i.stack.imgur.com/5WpXV.png)](https://i.stack.imgur.com/5WpXV.png)

I currently have

```
\item
        \[
        \begin{bmatrix}
            1 & 7 & 3 & -4 \\
            0 & 1 & -1 & 3 \\
            0 & 0 & 0 & 1 \\
            0 & 0 & 1 & -2
        \end{bmatrix}
        \begin{bmatrix}
            1 & 7 & 3 & -4 \\
            0 & 1 & -1 & 3 \\
            0 & 0 & 1 & -2 \\
            0 & 0 & 0 & 1
        \end{bmatrix} 
        \]

```

and I want to place the arrow in between.