Question
Answer
$$\dfrac{a}{-r^2c^2w^2+riw\cdot(3-a)+1}=\dfrac{a}{-c^2r^2w^2-airw+3irw+1}$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}\frac{a}{-r^2c^2w^2+riw\cdot(3-a)+1}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{a}{-r^2c^2w^2+3irw-airw+1} \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}\frac{a}{-c^2r^2w^2-airw+3irw+1}\end{aligned} $$ | |
| ① | Multiply $ \color{blue}{irw} $ by $ \left( 3-a\right) $ $$ \color{blue}{irw} \cdot \left( 3-a\right) = 3irw-airw $$ |
| ② | Combine like terms: $$ -c^2r^2w^2+3irw-airw = -c^2r^2w^2-airw+3irw $$ |
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