Question
Answer
$$3-4-7-8=-16$$
Explanation
Tap the blue circles to see an explanation.
| $$ \begin{aligned}3-4-7-8& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}-1+(-15) \xlongequal{ } \\[1 em] & \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle2}{\textcircled {2}} } }}}-1-15 \xlongequal{ } \\[1 em] & \xlongequal{ }-16\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{3} \color{blue}{-4} = \color{blue}{-1} $$Combine like terms: $$ \color{blue}{-7} \color{blue}{-8} = \color{blue}{-15} $$ |
| ② | $ + \, ( \, -15 \, ) = -15 $ |
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