\begin{exerciseStatement}
Explain how to use convolution along with the formula \(\mathcal{L}\{e^{at})=\frac{1}{s-a}\)to find the following inverse Laplace transform:
\[
\mathcal{L}^{-1}\left\{ \frac{5}{7 \, {\left(s - 1\right)} {\left(s - 7\right)}} \right\}
\]
\end{exerciseStatement}
\begin{exerciseAnswer}
\[ \frac{5}{42} \, e^{\left(7 \, t\right)} - \frac{5}{42} \, e^{t} \]
\end{exerciseAnswer}