Question
Answer
$$\dfrac{x}{x}+\dfrac{4}{x}=\dfrac{x+4}{x}$$
Explanation
| $$ \begin{aligned}\frac{x}{x}+\frac{4}{x}& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}\frac{x+4}{x}\end{aligned} $$ | |
| ① | Add $ \dfrac{x}{x} $ and $ \dfrac{4}{x} $ to get $ \dfrac{ x + 4 }{ \color{blue}{ x }}$. To add expressions with the same denominators, we add the numerators and write the result over the common denominator. $$ \begin{aligned} \frac{x}{x} + \frac{4}{x} & = \frac{x}{\color{blue}{x}} + \frac{4}{\color{blue}{x}} =\frac{ x + 4 }{ \color{blue}{ x }} \end{aligned} $$ |
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Simplify Rational Expressions