Question
Answer
$$9b+9-8b\cdot2c\cdot25=-400bc+9b+9$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}9b+9-8b\cdot2c\cdot25& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}9b+9-400bc \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-400bc+9b+9\end{aligned} $$ | |
| ① | $$ 8 b \cdot 2 c \cdot 25 = 400 b c $$ |
| ② | Combine like terms: $$ -400bc+9b+9 = -400bc+9b+9 $$ |
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