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$\begin{array}{l}+\underset{¯}{\begin{array}{l}49\\ 25\end{array}}\\ 74\end{array}$                              $\begin{array}{l}-\underset{¯}{\begin{array}{l}63\\ 58\end{array}}\\ 5\end{array}$                                 $\begin{array}{l}+\underset{¯}{\begin{array}{l}37\\ 63\end{array}}\\ 100\end{array}$ 

$\begin{array}{l}+\underset{¯}{\begin{array}{l}637\\ 151\end{array}}\\ 788\end{array}$                               $\begin{array}{l}-\underset{¯}{\begin{array}{l}524\\ 219\end{array}}\\ 305\end{array}$                               $\begin{array}{l}+\underset{¯}{\begin{array}{l}362\\ 418\end{array}}\\ 780\end{array}$