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