Answer:
25−67
=25−67
=25+−67
=−42
Explanation:
\begin{matrix}\space\space&6&7\\ -&2&5\end{matrix}
\frac{\begin{matrix}\space\space&6&\textbf{7}\\ -&2&\textbf{5}\end{matrix}}{\begin{matrix}\space\space&\space\space&\textbf{2}\end{matrix}}
\frac{\begin{matrix}\space\space&\textbf{6}&7\\ -&\textbf{2}&5\end{matrix}}{\begin{matrix}\space\space&\textbf{4}&2\end{matrix}}