To translate the sentence "The sum of a number and 7, divided by -3, is 2" into an equation, we can break it down as follows:
- Let \( n \) represent "a number."
- The phrase "the sum of a number and 7" can be written as \( n + 7 \).
- "Divided by -3" indicates that we take the entire expression \( n + 7 \) and divide it by -3, which results in \( \frac{n + 7}{-3} \).
- The phrase "is 2" translates to an equals sign, so we set the expression equal to 2.
Putting it all together, we get:
\[ \frac{n + 7}{-3} = 2 \]
Among the options provided, the correct answer matches this equation:
\( \frac{n + 7}{-3} = 2 \).