Home > PC3 > Chapter 10 > Lesson 10.1.3 > Problem10-58

10-58.

Solve for $r$, $s$, and $t$:

\begin{align*}3r + 2s − t = 8\\6r − s + 2t = 2\\r + s = 3\end{align*}

Write the system of equations as a matrix equation.
Use a calculator to solve the system.

If $AX = B$, then $X = A^{−1}B$.