\ANG{
Addiere $\D\frac{1}{44}$, $\D\frac{37}{66}$ und $\D\frac{7}{24}$. 
}
\LSG{
$\D\frac{1}{44}+\frac{37}{66}+\frac{7}{24}=\frac{1\cdot 6+37\cdot 4+7\cdot 11}{264}=
  \frac{6+148+77}{264}=\frac{231}{264}=\frac{3\cdot 7\cdot 11}{2^{3}\cdot 3\cdot 11}=
  \frac{7}{8}$
}  
