\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Calculate the sum of the following row matrices:
$$ \begin{pmatrix} 10 & 0 & -5 \end{pmatrix} + \begin{pmatrix} 2 & 4 & 5 \end{pmatrix} = \begin{pmatrix} \input{14155}{}{3em}{2em}{}{} & \input{24155}{}{3em}{2em}{}{} & \input{34155}{}{3em}{2em}{}{} \end{pmatrix} $$