Answer
$8$
Work Step by Step
$\bf{\text{Solution Outline:}}$
Substitute the given values, $c=3$ and $d=10,$ in the given expression, $
3+5c-d
.$
$\bf{\text{Solution Details:}}$
Substituting the given values, $c=3$ and $d=10,$ the given expression evaluates to
\begin{array}{l}\require{cancel}
3+5c-d
\\\\=
3+5(3)-10
\\\\=
3+15-10
\\\\=
18-10
\\\\=
8
.\end{array}
