Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{-4}{1}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-\frac{4}{1} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-4\end{aligned} $$ | |
| ① | Place minus sign in front of the fraction. |
| ② | Remove 1 from denominator. |