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Chapter 7 Rational Expressions and Equations

Chapter 7 Rational Expressions and Equations. Section 5 Adding and Subtracting Rational Expressions with Unlike Denominators. Section 7.5 Objectives. 1 Add and Subtract Rational Expressions with Unlike Denominators. Adding with Unlike Denominators.

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Chapter 7 Rational Expressions and Equations

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  1. Chapter 7 Rational Expressions and Equations Section 5 Adding and Subtracting Rational Expressions with Unlike Denominators

  2. Section 7.5 Objectives 1 Add and Subtract Rational Expressions with Unlike Denominators

  3. Adding with Unlike Denominators Steps to Add or Subtract Rational Expressions with Unlike Denominators Step 1: Find the least common denominator. Step 2: Rewrite each rational expression as an equivalent rational expression with the common denominator. Step 3: Add or subtract the rational expressions found in Step 2. Step 4: Simplify the result.

  4. Multiply the second fraction by Adding with Unlike Denominators Example: Find the sum: The LCD is xy.

  5. Multiply the first fraction by Multiply the second fraction by Adding with Unlike Denominators Example: Find the sum: The LCD is 112x2y4.

  6. Multiply the first fraction by Subtracting with Unlike Denominators Example: Find the difference: The LCD is 2(x – 3).

  7. (d – 6)(d + 6) (d – 6)2 Subtracting with Unlike Denominators Example: Find the difference: The LCD is (d – 6)2(d + 6). Continued.

  8. Subtracting with Unlike Denominators Example continued:

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