## Elementary Algebra

$\dfrac{27}{28}$
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}