Find the additive inverse of :
`-1`

Answer

To find the additive inverse of the number -1, we can follow these steps:

### Step-by-Step Solution:

1. **Understand the Concept of Additive Inverse**:
The additive inverse of a number is the value that, when added to the original number, results in zero. In mathematical terms, if 'a' is a number, its additive inverse is '-a'.

2. **Identify the Given Number**:
In this case, the number we are working with is -1.

3. **Set Up the Equation**:
Let the additive inverse of -1 be represented as 'x'. According to the definition, we can write the equation:
\[ -1 + x = 0 \]

4. **Solve for x**:
To find 'x', we need to isolate it in the equation:
\[ x = 0 + 1 \]
Simplifying this gives:
\[ x = 1 \]

5. **Conclusion**:
Therefore, the additive inverse of -1 is 1.

### Final Answer:
The additive inverse of -1 is **1**.

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