This first one I found by myself, but Chat GPT gave me another answer:

The pattern in the equations can be described using a specific formula. The formula used in this sequence appears to be:

n + m = n × m + n

Where n is the first number and m is the second number.

Let's break it down:

1. For 1 + 4:

1 × 4 + 1 = 4 + 1 = 5

2. For 2 + 5:

2 × 5 + 2 = 10 + 2 = 12

3. For 3 + 6:

3 × 6 + 3 = 18 + 3 = 21

Now, applying the same formula to 8 + 11:

8 × 11 + 8 = 88 + 8 = 96

So, the answer is 96.