\( \definecolor{colordef}{RGB}{249,49,84} \definecolor{colorprop}{RGB}{18,102,241} \)
Find the coordinates of the image of point \(M(1,2)\) under a translation by vector \(\vec{v}\begin{pmatrix}2 \\ 1\end{pmatrix}\).
\(M'(\)
\(,\)
\()\)