Question
Answer
$$2t\cdot2+5t-12=9t-12$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2t\cdot2+5t-12& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4t+5t-12 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}9t-12\end{aligned} $$ | |
| ① | $$ 2 t \cdot 2 = 4 t $$ |
| ② | Combine like terms: $$ \color{blue}{4t} + \color{blue}{5t} -12 = \color{blue}{9t} -12 $$ |
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