tính 65 – 6

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{65}\\{\,\,6}\end{array}} \\\,\,\,\,59\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{95}\\{\,\,\,5}\end{array}} \\\,\,100\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{94}\\{68}\end{array}} \\\,\,\,\,26\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{92}\\{\,\,8}\end{array}} \\\,\,100\end{array}\)