\ANG{
Ordne der Gr"o"se nach:\qquad $\D\frac{8}{11},\quad \frac{18}{23},\quad
\frac{12}{17}$
}
\LSG{
$\D\frac{8}{11}=\frac{72}{99},\quad
   \frac{18}{23}=\frac{72}{92},\quad
   \frac{12}{17}=\frac{72}{102}\quad\DANN\quad
   \frac{12}{17}<\frac{8}{11}<\frac{18}{23}$
}
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