Chapter 3 - Equations and Problem Solving - 3.1 - Solving First-Degree Equations - Problem Set 3.1 - Page 100: 38

$n=\dfrac{28}{3}$

Using the properties of equality, the value of the variable that satisfies the given equation, $ -56=-6n ,$ is \begin{array}{l}\require{cancel} \dfrac{-56}{-6}=n \\\\ \dfrac{\cancel{-2}\cdot28}{\cancel{-2}\cdot3}=n \\\\ \dfrac{28}{3}=n \\\\ n=\dfrac{28}{3} .\end{array}