tính 47 + 26

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{47}\\{26}\end{array}} \\\,\,\,\,73\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{75}\\{\,\,\,7}\end{array}} \\\,\,\,\,68\end{array}\)

\(\begin{array}{l}\underline { + \begin{array}{*{20}{c}}{14}\\{29}\end{array}} \\\,\,\,\,43\end{array}\)

\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{92}\\{\,\,\,9}\end{array}} \\\,\,\,\,83\end{array}\)