Adding rational expressions with different denominators 1

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
6621 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.

More free YouTube videos by Julie Harland are organized at http://yourmathgal.com

Questions answered by this video:
  • How do you add and subtract rational expressions with different denominators?
  • How do you add 5/6x + 7/9x^2 by finding common denominators?
  • What is the jealousy method for finding the LCD and how is it used to add fractions?
  • How can you subtract (3x - 4)/6x - (2x - 5)/4x by finding common denominators?
  • How do you subtract 2/9m - 5/12m^2 by finding the LCD?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson starts off with a review of how to add and subtract rational expressions that have the same denominator and goes on to explain how to add and subtract these algebraic fractions that have different denominators. This uses the newly-learned skill of finding LCDs for rational expressions. This is a great tutorial for learning to add and subtract without common denominators.