\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Find the values of \(a\) and \(b\) such that the following matrices are equal:$$ \begin{pmatrix} a+b & 5 \\ 1 & a-b \end{pmatrix} = \begin{pmatrix} 8 & 5 \\ 1 & 4 \end{pmatrix} $$
\(a = \)
\(\quad\) and \(\quad\) \(b = \)