4.5 Exercise 5

Write each system of linear equations as an augmented matrix:

ⓐ $\begin{cases} 3 x + 8 y = −3 \\ 2 x = −5 y - 3 \end{cases}$ ⓑ $\begin{cases} 2 x - 5 y + 3 z = 8 \\ 3 x - y + 4 z = 7 \\ x + 3 y + 2 z = −3 \end{cases}$