Chapter 4.2, Problem 29E

Perform the row operations indicated in Problems $23\text{-}34$ on the following matrix:

$\left.\left[\left.\begin{array}{cc}2& -4\\ 1& -3\end{array}\right|\right.\begin{array}{c}6\\ 5\end{array}\right]$

$-\frac{1}{2}{R}_1\to R_1$