There are many pairs of numbers that can be added together to equal 30. One simple example is 10 and 20. When you add these two numbers, you get:
10 + 20 = 30
Another example is 15 and 15. Both numbers are the same, and they also add up to 30:
15 + 15 = 30
In fact, any two numbers that total to 30 can work, so there are countless combinations. For instance, 5 and 25, or 0 and 30—each of these pairs meets the requirement. The important point is that as long as the sum is 30, the specific numbers can vary widely.