## Elementary and Intermediate Algebra: Concepts & Applications (6th Edition)

$4$
Substituting $x$ with $10$ and $y$ with $5$, then the given expression, $\dfrac{2x}{y}$, evaluates to \begin{array}{l}\require{cancel} \dfrac{2(10)}{5} \\\\= \dfrac{2(\cancel{5}\cdot2)}{\cancel{5}} \\\\= 4 .\end{array}