1. The problem is to find the sum of 2 and 2. 2. The formula for addition is $a + b = c$, where $a$ and $b$ are numbers and $c$ is their sum. 3. Substitute the values: $2 + 2 = c$. 4. Calculate the sum: $2 + 2 = 4$. 5. Therefore, the answer is $4$.