Tutorial - Adding two imaginary numbers together ex 12, 5i + 7i

The video tutorial explains how to combine complex numbers by treating them as terms to be added. It starts with a basic introduction to complex numbers, followed by examples of combining real numbers and like terms with variables. The tutorial then demonstrates how to apply the same principles to complex numbers, resulting in a simplified expression.

Explain the process of adding complex numbers as described in the text.

What is the final simplified expression mentioned in the text?