Answer
$p=15$
Work Step by Step
Use the Multiplication Property of Equality by multiplying $5$ to both sides of the equation:
$$\begin{align*}
(p\div5) \times 5&=3 \times 5\\
p&=15\end{align*}$$
Check the solution by substituting $15$ to the variable in the given equation:
$$\begin{align*}
p\div5&=3\\
15\div 5&\stackrel{?}{=}3\\
3&\stackrel{\checkmark}{=}3\end{align*}$$
Thus, the solution is $p=15$.