Example 5.3.5 Scaling Both Equations

Solve the system of equations using the elimination method.

\begin{align*} \left\{ \begin{alignedat}{4} 2x \amp {}+{} \amp 3y \amp {}={} \amp 10 \\ -3x \amp {}+{} \amp 5y \amp {}={} \amp {-15} \end{alignedat} \right. \end{align*}
Explanation
in-context