1 answer
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1. **Step of the Mistake**: Jillian made a mistake in **Step 4**, where she concluded that \( 7 + (-2) = 2 \).
2. **How to Correct Jillian's Work**: To correct Jillian's work, we need to correctly perform the operation of adding a negative number. When adding a negative number, we effectively subtract its absolute value from the original number. In this case, when we add \( 7 + (-2) \), we subtract 2 from 7:
\[
7 + (-2) = 7 - 2 = 5
\]
3. **Correct Final Answer**: The correct final answer is **5**.