Answer
$$4a-\frac{1}{1}-4a=-1$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}4a-\frac{1}{1}-4a& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4a-1-4a \xlongequal{ } \\[1 em] & \xlongequal{ } \cancel{4a}-1 -\cancel{4a} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-1\end{aligned} $$ | |
| ① | Remove 1 from denominator. |
| ② | Combine like terms: $$ \, \color{blue}{ \cancel{4a}} \,-1 \, \color{blue}{ -\cancel{4a}} \, = -1 $$ |
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Simplify Rational Expressions