Exercise 52 Page 356

To solve the equation, we have to isolate $u$ on one side. Using the Division Property of Equality, we will divide both sides of the equation by $6.$ This will eliminate the coefficient and isolate $u.$ We have found that $\text{-}8$ is the solution to the equation. To check that this solution is correct, we can substitute $\text{-}8$ for $u$ in the original equation and simplify. Since the left-hand-side and right-hand-side are equal, $\text{-}8$ is a correct solution.