Simplify by adding two rational terms

The video tutorial explains how to add rational terms, starting with a review of adding simple fractions by finding common denominators. It then progresses to adding fractions with binomial denominators, using multiplication to find a common denominator. The tutorial concludes with simplifying the resulting expression by combining like terms.

What is the result of adding the fractions 4/12 and 3/12?

Describe the steps taken to simplify the expression after adding two rational terms.