Question
Answer
$$160x\cdot4-2985x\cdot3+18130x\cdot2-37184x+46639=-9239x+46639$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}160x\cdot4-2985x\cdot3+18130x\cdot2-37184x+46639& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}640x-8955x+36260x-37184x+46639 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle4}{\textcircled {4}} } }}}-9239x+46639\end{aligned} $$ | |
| ① | $$ 160 x \cdot 4 = 640 x $$ |
| ② | $$ 2985 x \cdot 3 = 8955 x $$ |
| ③ | $$ 18130 x \cdot 2 = 36260 x $$ |
| ④ | Combine like terms: $$ \color{blue}{640x} \color{red}{-8955x} + \color{green}{36260x} \color{green}{-37184x} +46639 = \color{green}{-9239x} +46639 $$ |
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