Question
Answer
$$-10q\cdot2-14q+15-15q\cdot2+5q+3=-59q+18$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}-10q\cdot2-14q+15-15q\cdot2+5q+3& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-20q-14q+15-30q+5q+3 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-34q+15-25q+3 \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle3}{\textcircled {3}} } }}}-59q+18\end{aligned} $$ | |
| ① | $$ 10 q \cdot 2 = 20 q $$$$ 15 q \cdot 2 = 30 q $$ |
| ② | Combine like terms: $$ \color{blue}{-20q} \color{blue}{-14q} +15 = \color{blue}{-34q} +15 $$Combine like terms: $$ \color{blue}{-30q} + \color{blue}{5q} +3 = \color{blue}{-25q} +3 $$ |
| ③ | Combine like terms: $$ \color{blue}{-34q} + \color{red}{15} \color{blue}{-25q} + \color{red}{3} = \color{blue}{-59q} + \color{red}{18} $$ |
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