Điền vào chỗ trống:

a) \(\begin{array}{l} + \underline {\begin{array}{*{20}{c}}{2...}\\{...4}\end{array}} \\\,\,\,\,\,59\end{array}\)

b)\(\begin{array}{l} + \underline {\begin{array}{*{20}{c}}{...6}\\{2...}\end{array}} \\\,\,\,\,\,58\end{array}\)

c) \(\begin{array}{l} + \underline {\begin{array}{*{20}{c}}{47}\\{...2}\end{array}} \\\,\,\,\,\,7...\end{array}\)

d) \(\begin{array}{l} + \underline {\begin{array}{*{20}{c}}{5...}\\{24}\end{array}} \\\,\,\,\,\,...8\end{array}\)