Chapter 2.5, Problem 5P

Explanation of Solution

Solving the given linear system:

Consider the given system of linear equations,

$\begin{array}{l}{x}_1+3x_2=4\\ 2x_1+5x_2=7\end{array}$

For a system of the form $Ax=b$, it can be written as follows:

$x=A^{-1}b$

For the given system of linear equations, the inverse obtained in Problem 1 can be used, which is given below,

$A^{-1}=\left[\begin{array}{l}-53\\ 2-1\end{array}\right]$

Thus, it can be written as follows:

$\begin{array}{}\end{array}$