Question
Answer
$$7r+4-(4r+2)=3r+2$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}7r+4-(4r+2)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}7r+4-4r-2 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}3r+2\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 4r+2 \right) = -4r-2 $$ |
| ② | Combine like terms: $$ \color{blue}{7r} + \color{red}{4} \color{blue}{-4r} \color{red}{-2} = \color{blue}{3r} + \color{red}{2} $$ |
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Simplify Rational Expressions