Calculate the Inverse Number: Finding the Reciprocal of 5

To solve this problem, we'll follow these steps:

• Step 1: Identify the given number.
• Step 2: Find its opposite by changing the sign.

Now, let's work through each step:
Step 1: The problem gives us the number $5$.
Step 2: The opposite of a positive number is the same number with a negative sign.
Thus, the opposite of $5$ is $-5$.

Therefore, the opposite number of $5$ is $-5$.