Simplify a rational expression with two variables

The video tutorial reviews a previous lesson on dividing expressions with exponents. It breaks down the problem into three parts: simplifying the fraction 12/16, applying the rules of exponents to x and y terms, and combining the results. The teacher explains how to simplify fractions by finding common factors and demonstrates the subtraction of exponents when dividing terms with the same base. The final simplified expression is presented as 3x^4y/4.

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