Question
Answer
$$r(-4+2-2+7)=r\cdot3$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}r(-4+2-2+7)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}r\cdot(-2+5) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}r\cdot3\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{-4} + \color{blue}{2} = \color{blue}{-2} $$Combine like terms: $$ \color{blue}{-2} + \color{blue}{7} = \color{blue}{5} $$ |
| ② | Combine like terms: $$ \color{blue}{-2} + \color{blue}{5} = \color{blue}{3} $$ |
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Simplify Rational Expressions