| $$ \begin{aligned}\frac{6\sqrt{3}}{8}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{ 6 \sqrt{ 3 } : \color{blue}{ 2 } } { 8 : \color{blue}{ 2 }} \xlongequal{ } \\[1 em] & \xlongequal{ }\frac{3\sqrt{3}}{4}\end{aligned} $$ | |
| ① | Divide numerator and denominator by $ \color{blue}{ 2 } $. |