Adding rational expressions with different denominators 4

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Taught by YourMathGal
  • Currently 4.0/5 Stars.
6046 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

Questions answered by this video:
  • How do you add and subtract rational expressions with unlike denominators?
  • How do you add 7/(2m + 20) + 70/(m^2 - 100)?
  • How do you add (2x + 5)/(x - 3) + 5x/(2x + 1)?
  • How do you subtract 3/(x + h) - 1/x?
  • Staff Review

    • Currently 4.0/5 Stars.
    This lesson just shows some more examples of adding and subtracting rational expressions with different denominators. The problems continue to increase in difficulty as the lessons goes on. Perhaps this series could be used on successive days to help test your skills and learn a bit more each day. In some problems, the result of the addition or subtraction can be simplified to get the final result.