Let's solve the problem step by step.
### Step-by-Step Solution
1. Identify the Terms: We are given two numbers, 6 and 3.
2. Addition Operation: We need to add these two numbers. In an addition operation, you combine quantities to get a total sum.
3. Perform the Addition:
[tex]\[
6 + 3
\][/tex]
4. Combine the Values:
[tex]\[
6 + 3 = 9
\][/tex]
So, when you add the numbers 6 and 3, you get 9.
Thus, the final answer is:
[tex]\[
\boxed{9}
\][/tex]
