Đáp án:
$\begin{array}{l}
c) - 0,5\\
\dfrac{3}{{ - 5}} = - 0,6 < - 0,5\\
Vậy\, - 0,5 > \dfrac{3}{{ - 5}}\\
d)\dfrac{{ - 1}}{{25}} < 0 < \dfrac{1}{{1225}}\\
e)\dfrac{{215}}{{216}} < 1\\
\dfrac{{104}}{{103}} > 1\\
\Leftrightarrow \dfrac{{215}}{{216}} < \dfrac{{104}}{{103}}\\
f) - \dfrac{{788}}{{789}} > - 1\\
\dfrac{{ - 789}}{{788}} < - 1\\
\Leftrightarrow - \dfrac{{788}}{{789}} > \dfrac{{ - 789}}{{788}}\\
g)\dfrac{{ - 151515}}{{232323}} = \dfrac{{ - 15.\left( {10101} \right)}}{{23.10101}} = \dfrac{{ - 15}}{{23}}
\end{array}$
