Answer
$$2x\cdot3+8x\cdot2-72x-288=-50x-288$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}2x\cdot3+8x\cdot2-72x-288& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}6x+16x-72x-288 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-50x-288\end{aligned} $$ | |
| ① | $$ 2 x \cdot 3 = 6 x $$ |
| ② | $$ 8 x \cdot 2 = 16 x $$ |
| ③ | Combine like terms: $$ \color{blue}{6x} + \color{red}{16x} \color{red}{-72x} -288 = \color{red}{-50x} -288 $$ |
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