\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Calculate \(3\vec{a} - \vec{b}\) where \(\vec{a} = \begin{pmatrix} 2 \\ -3 \end{pmatrix}\) and \(\vec{b} = \begin{pmatrix} -5 \\ 4 \end{pmatrix}\).
\(3\vec{a} - \vec{b} = \begin{pmatrix} \input{124578}{}{3em}{2em}{}{} \\ \input{224578}{}{3em}{2em}{}{} \end{pmatrix}\)