Chapter 2 - Equations, Inequalities, and Problem Solving - 2.1 Solving Equations - 2.1 Exercise Set - Page 86: 35

$x=\dfrac{41}{24}$

Adding $ \dfrac{5}{6} $ to both sides of the given equation, $ x-\dfrac{5}{6}=\dfrac{7}{8} $, then, \begin{array}{l} x-\dfrac{5}{6}+\dfrac{5}{6}=\dfrac{7}{8}+\dfrac{5}{6} \\\\ x=\dfrac{7}{8}+\dfrac{5}{6} \\\\ x=\dfrac{21}{24}+\dfrac{20}{24} \\\\ x=\dfrac{41}{24} .\end{array}