Question
Answer
$$10\cdot5+x\cdot5+7\cdot3-6\cdot3+8x-12x+14-5=x+62$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}10\cdot5+x\cdot5+7\cdot3-6\cdot3+8x-12x+14-5& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}50+5x+21-18+8x-12x+14-5 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle4}{\textcircled {4}} } }}}x+62\end{aligned} $$ | |
| ① | $$ 10 \cdot 5 = 50 $$ |
| ② | $$ 7 \cdot 3 = 21 $$ |
| ③ | $$ 6 \cdot 3 = 18 $$ |
| ④ | Combine like terms: $$ \color{blue}{50} + \color{red}{5x} + \color{green}{21} \color{orange}{-18} + \color{blue}{8x} \color{blue}{-12x} + \color{red}{14} \color{red}{-5} = \color{blue}{x} + \color{red}{62} $$ |
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