Chapter 2 - Equations, Inequalities, and Problem Solving - Test: Chapter 2 - Page 151: 3

$x=16$

Using the properties of equality, the solution to the given equation, $ -\dfrac{4}{7}x=-28 $, is \begin{array}{l}\require{cancel} x=-28\cdot\left( -\dfrac{4}{7} \right) \\\\ x=\cancel{7}\cdot(-4)\cdot\left( -\dfrac{4}{\cancel{7}} \right) \\\\ x=16 .\end{array}