# Rational Expressions: Addition and Subtraction with Like Denominators

This packet helps students understand how to add and subtract rational expressions with like denominators. Each page starts with easier problems that get more difficult as students work through the packet. After doing all 30 problems, students should be more comfortable doing these problems and have a clear understanding of how to solve them.

*Simplify the expression.*

**Simple**:

$\dfrac{2}{10x} + \dfrac{6x+4}{10x}$

**Advanced**:

$\dfrac{3x^4-9x^2}{x^2-81}-\dfrac{4x^4-9x^2}{x^2-81}$

Practice problems require knowledge of simplifying, addition, and subtraction of fractions.