\ANG{
Berechne:
\begin{enumerate}
\item $17 - 8-(-3)$,\ \ \ $18-(-5) + 32$,\ \ \ $3-7 - (-4)-(-9)$,\ \ \ $8-237 + (-17)-28$
\item $25 + (-26)-(-27)$,\ \ \ $25 - 26-27$,\ \ \ $(25 - 26)-27$,\ \ \ $(25 - 26)-(-27)$
\end{enumerate}

}
\LSG{
\begin{enumerate}
\item $12$,\ \ \ $55$,\ \ \ $9$,\ \ \ $-274$
\item $26$,\ \ \ $-28$,\ \ \ $-28$,\ \ \ $26$
\end{enumerate}
}
