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 Dependent Variable

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# Adding and Subtracting Rational Expressions with Unlike Denominators

Recall:

Adding and subtracting fractions with unlike denominators.

1. Find the LCD.

2. Convert each fraction to an equivalent fraction with the LCD.

3. Add or subtract the tops, leaving the bottom alone.

4. Reduce to lowest terms.

New Stuff:

Procedure: (Adding and Subtracting Rational Expressions)

1. Find the LCD.

2. Convert each rational expression to an equivalent expression with the LCD.

3. Add or subtract the tops, leave the bottom alone.

4. Simplify.

Examples: 