Answer
$\dfrac{27}{28}$
Work Step by Step
Cancelling the common factor between the numerator and the denominator, the given expression, $
\dfrac{-54}{-56}
,$ simplifies to
\begin{array}{l}\require{cancel}
\dfrac{\cancel{-2}\cdot27}{\cancel{-2}\cdot28}
\\\\=
\dfrac{27}{28}
\end{array}
