Chapter 2 - Equations, Inequalities, and Problem Solving - Review Exercises: Chapter 2 - Page 149: 11

$x=-5$

Using the properties of equality, the solution to the given equation, $ -\dfrac{x}{5}=13 $, is \begin{array}{l}\require{cancel} x=13\cdot\dfrac{-5}{13} \\\\ x=\cancel{13}\cdot\dfrac{-5}{\cancel{13}} \\\\ x=-5 .\end{array}