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