Question: User: $-20-(-2)$
1. **State the problem:** Simplify the expression $-20-(-2)$.
2. **Recall the rule:** Subtracting a negative number is the same as adding its positive counterpart. So, $a - (-b) = a + b$.
3. **Apply the rule:** Replace $-(-2)$ with $+2$, so the expression becomes $-20 + 2$.
4. **Perform the addition:** $-20 + 2 = -18$.
5. **Final answer:** The simplified value of $-20-(-2)$ is $-18$.