[tex]\frac{\begin{matrix}\space\space&\textbf{7}&11&9&10&8&12\\ \space\space&\textbf{\linethrough{8}}&\linethrough{12}&\linethrough{10}&\linethrough{0}&\linethrough{9}&\linethrough{2}\\ -&\textbf{5}&2&0&1&8&9\end{matrix}}{\begin{matrix}\space\space&\textbf{2}&9&9&9&0&3\end{matrix}}[/tex]
