Answer
$\dfrac{2y}{15x}$
Work Step by Step
Cancelling the common factor between the numerator and the denominator, the given expression, $
\dfrac{4y}{30x}
,$ simplifies to
\begin{array}{l}\require{cancel}
\dfrac{\cancel{2}\cdot2y}{\cancel{2}\cdot15x}
\\\\=
\dfrac{2y}{15x}
\end{array}
