tính 722 - 61
Giải thích
\(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{722}\\{\,\,\,61}\end{array}} \\\,\,\,\,661\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{336}\\{185}\end{array}} \\\,\,\,\,151\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{721}\\{213}\end{array}} \\\,\,\,\,508\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{611}\\{107}\end{array}} \\\,\,\,\,504\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{521}\\{170}\end{array}} \\\,\,\,\,351\end{array}\) | \(\begin{array}{l}\underline { - \begin{array}{*{20}{c}}{928}\\{\,\,\,88}\end{array}} \\\,\,\,\,840\end{array}\) |