Adding rational expressions with different denominators 2

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
5802 views | 1 rating
Part of video series
Meets NCTM Standards:
Lesson Description:

Shows how to add and subtract algebraic fractions by getting a common denominator.

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Questions answered by this video:
  • How do you add and subtract rational expressions with different denominators?
  • How do you subtract 5/(x + 2) - 2x/(x^2 - 4) by finding the least common denominator?
  • What is 2x/(x^2 + 5x + 6) + 3/(x^2 - 9)?
  • What is the jealousy method for finding a least common denominator and how is it used to add fractions?
  • How do you add 7/(3x - 2) + 6x/(2 - 3x) when the denominators are opposites of each other?
  • How do you subtract 7/(x - 4) - 3/(4 - x) if the denominators are opposites of each other?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson does many more practice problems for finding the least common denominator of 2 rational expressions and then after giving each fraction this denominator, adding or subtracting the two algebraic fractions. This is a great lesson with great explanations.