Nối phép tính với kết quả thích hợp:

\[\begin{array}{l} - \begin{array}{*{20}{c}}{618}\\{\underline {345} }\end{array}\\\,\,\,\,273\end{array}\]

\[\begin{array}{l} + \begin{array}{*{20}{c}}{253}\\{\underline {286} }\end{array}\\\,\,\,\,\,539\end{array}\]

\[\begin{array}{l} + \begin{array}{*{20}{c}}{273}\\{\underline {162} }\end{array}\\\,\,\,\,435\end{array}\]

\[\begin{array}{l} + \begin{array}{*{20}{c}}{175}\\{\underline {484} }\end{array}\\\,\,\,\,659\end{array}\]