Finding the common difference in an arithmetic sequence is really easy! Here’s how you can do it:

1. Look at the terms: Pick any two numbers that are next to each other in the sequence.

2. Subtract: Just take the second number and subtract the first number.

For example, let's look at the sequence 2, 5, 8, 11.

To find the common difference, do this:

$$5 - 2 = 3$$

So, the common difference (d) is 3.

See? It’s that simple!