Okay, we are tasked with adding 7126 and 1152. Let's begin!

Step 1: We'll start by adding the digits 6 & 2 in column 1 and get 8.

Step 2: We'll start by adding the digits 2 & 5 in column 2 and get 7.

Step 3: We'll start by adding the digits 1 & 1 in column 3 and get 2.

Step 4: We'll start by adding the digits 7 & 1 in column 4 and get 8.

So, 7126 + 1152 = 8278.

