Given two numbers, create a function that returns their sum.
Sure, here is a simple function in Python that takes two numbers as arguments and returns their sum:

```python
def add_numbers(num1, num2):
    return num1 + num2
```

To use this function, you can call it and pass in the two numbers that you want to add as arguments. For example:
```python
result = add_numbers(5, 3)
print(result)
```
This will output `8` to the console, as the sum of `5` and `3` is `8`.
Below is an instruction that describes a task, write a response that appropriately completes the request.

### Instruction:
Given two numbers, create a function that returns their sum.

### Response:
Sure, here is a simple function in Python that takes two numbers as arguments and returns their sum:

```python
def add_numbers(num1, num2):
    return num1 + num2
```

To use this function, you can call it and pass in the two numbers that you want to add as arguments. For example:
```python
result = add_numbers(5, 3)
print(result)
```
This will output `8` to the console, as the sum of `5` and `3` is `8`.