Answer
$\dfrac{3}{10}$
Work Step by Step
Cancelling the common factor between the numerator and the denominator, the given expression, $
\dfrac{-24}{-80}
,$ simplifies to
\begin{array}{l}\require{cancel}
\dfrac{\cancel{-8}\cdot3}{\cancel{-8}\cdot10}
\\\\=
\dfrac{3}{10}
\end{array}
