| $$ \begin{aligned}\frac{v^2-5v-14}{v+4v+4}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{v^2-5v-14}{5v+4}\end{aligned} $$ | |
| ① | Simplify denominator $$ \color{blue}{v} + \color{blue}{4v} +4 = \color{blue}{5v} +4 $$ |