Chapter 10 - Section 10.3 - Matrices and Systems of Linear Equations - 10.3 Exercises - Page 710: 22

$\left[\begin{array}{llll} -5 & 2 & -3 & 3\\ 0 & 1 & -5 & -14\\ -1 & 3 & 1 & 8 \end{array}\right]$

$\left[\begin{array}{llll} -5 & 2 & -3 & 3\\ 10+2(-5) & -3+2(2) & 1+2(-3) & -20+2(3)\\ -1 & 3 & 1 & 8 \end{array}\right]$ $\left[\begin{array}{llll} -5 & 2 & -3 & 3\\ 0 & 1 & -5 & -14\\ -1 & 3 & 1 & 8 \end{array}\right]$