Answer
$-\dfrac{23a}{41}$
Work Step by Step
Cancelling the common factor between the numerator and the denominator, the given expression, $
\dfrac{-23ac}{41c}
,$ simplifies to
\begin{array}{l}\require{cancel}
\dfrac{\cancel{c}\cdot(-23a)}{\cancel{c}\cdot41}
\\\\=
\dfrac{-23a}{41}
\\\\=
-\dfrac{23a}{41}
\end{array}