Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{30^1}{4}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{30}{4} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}} \frac{ 30 : \color{orangered}{ 2 } }{ 4 : \color{orangered}{ 2 }} \xlongequal{ } \\[1 em] & \xlongequal{ }\frac{15}{2}\end{aligned} $$ | |
| ① | A polynomial raised to the power of one equals itself. |
| ② | Divide both the top and bottom numbers by $ \color{orangered}{ 2 } $. |