What much be subtracted from 7 to get `-6` ?

Answer

To solve the problem of what must be subtracted from 7 to get -6, we can follow these steps:

### Step-by-Step Solution:

1. **Set Up the Equation**:
We need to find a number (let's call it \( X \)) that must be subtracted from 7 to get -6. We can write this as:
\[ 7 - X = -6 \]

2. **Isolate the Variable**:
To find \( X \), we need to isolate it on one side of the equation. We can do this by moving \( X \) to the right side and -6 to the left side. We can achieve this by adding \( X \) to both sides and adding 6 to both sides:
\[ 7 + 6 = X \]

3. **Simplify the Equation**:
Now, we simplify the left side:
\[ 13 = X \]

4. **Conclusion**:
Therefore, the value of \( X \) is 13. This means that **13 must be subtracted from 7 to get -6**.

### Final Answer:
**13 must be subtracted from 7 to get -6.**