The additive inverse of a number is what you add to that number to get zero. For any real number $x$, its additive inverse is $-x$. In other words, the additive inverse of a number is the number with the opposite sign.

Example:

Let's consider the number $7$.

• The additive inverse of $7$ is $-7$, because $7 + (-7) = 0$.

Another Example:

For a negative number like $-4$:

• The additive inverse of $-4$ is $4$, because $-4 + 4 = 0$.

Would you like to go into more detail or have any questions?

Here are five related questions to explore:

1. What is the additive inverse of a fraction like $\frac{3}{5}$?
2. How does the concept of additive inverse apply to complex numbers?
3. Can a number have more than one additive inverse?
4. What is the relationship between the additive inverse and the absolute value of a number?
5. How is the additive inverse used in solving linear equations?

Tip: Remember, the additive inverse always changes the sign of the number but not its magnitude!