Answer
$\dfrac{3}{7}$
Work Step by Step
Cancelling the common factor between the numerator and the denominator, then the given expression, $
\dfrac{24}{56}
$, simplifies to
\begin{array}{l}\require{cancel}
\dfrac{\cancel{8}\cdot3}{\cancel{8}\cdot7}
\\\\=
\dfrac{3}{7}
.\end{array}