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10-5 Addition and Subtraction: Unlike Denominators

10-5 Addition and Subtraction: Unlike Denominators. Standard 13.0: Add and subtract rational expressions. Factor each expression. Form the product using each factor the greatest number of times it occurs. . Least Common Multiple Rule. #1 Finding the LCM. #2 Finding the LCM.

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10-5 Addition and Subtraction: Unlike Denominators

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  1. 10-5Addition and Subtraction:Unlike Denominators Standard 13.0: Add and subtract rational expressions.

  2. Factor each expression. Form the product using each factor the greatest number of times it occurs. Least Common Multiple Rule

  3. #1 Finding the LCM

  4. #2 Finding the LCM

  5. Adding and Subtracting Rules: Unlike Denominators • Change Subtraction to Add the Opposite • Factor the Denominator, if possible • Find a Common Denominator (LCD) • Multiply the Numerator and Denominator by the missing factor • Add the Numerator • Factor the Numerator if possible • Simplify if possible

  6. Fraction Rule (Addition and Subtraction)

  7. #5 Add or subtract. Simplify

  8. #6 Add or subtract. Simplify

  9. #7 Add or subtract. Simplify

  10. #8 Add or subtract. Simplify

  11. Add or Subtract. Simplify.

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