Question
Answer
$$4x+5-(7x-8)=-3x+13$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}4x+5-(7x-8)& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4x+5-7x+8 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-3x+13\end{aligned} $$ | |
| ① | Remove the parentheses by changing the sign of each term within them. $$ - \left( 7x-8 \right) = -7x+8 $$ |
| ② | Combine like terms: $$ \color{blue}{4x} + \color{red}{5} \color{blue}{-7x} + \color{red}{8} = \color{blue}{-3x} + \color{red}{13} $$ |
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