$$ \begin{aligned}16 \cdot \frac{i}{16}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}i\end{aligned} $$ | |
① | Step 1: Write $ 16 $ as a fraction by putting $ \color{red}{1} $ in the denominator. Step 2: Cancel $ \color{blue}{ 16 } $ in first and second fraction. Step 3: Multiply numerators and denominators. Step 4: Simplify numerator and denominator. $$ \begin{aligned} 16 \cdot \frac{i}{16} & \xlongequal{\text{Step 1}} \frac{16}{\color{red}{1}} \cdot \frac{i}{16} \xlongequal{\text{Step 2}} \frac{\color{blue}{1}}{1} \cdot \frac{i}{\color{blue}{1}} = \\[1ex] & \xlongequal{\text{Step 3}} \frac{ 1 \cdot i }{ 1 \cdot 1 } \xlongequal{\text{Step 4}} \frac{ i }{ 1 } =i \end{aligned} $$ |