tính 91 - 73
\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{91}\\{73}\end{array}} \\\,\,\,\,18\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{80}\\{65}\end{array}} \\\,\,\,\,15\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{84}\\{27}\end{array}} \\\,\,\,\,57\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{38}\\{19}\end{array}} \\\,\,\,\,19\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{95}\\{59}\end{array}} \\\,\,\,\,36\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{67}\\{29}\end{array}} \\\,\,\,\,38\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{71}\\{22}\end{array}} \\\,\,\,\,49\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{60}\\{23}\end{array}} \\\,\,\,\,37\end{array}\) |
