Dismiss Notice
Join Physics Forums Today!
The friendliest, high quality science and math community on the planet! Everyone who loves science is here!

Fraction help

  1. Dec 15, 2004 #1
    If i have something like (6/x+2) + (8/x+3) how to i do that?

    aren't i supposed to invert and multiply or something, thanks

  2. jcsd
  3. Dec 15, 2004 #2
    [tex]\frac{6(x+3)}{(x+2)(x+3)} + \frac{8(x+2)}{(x+2)(x+3)}[/tex]

    You just need to find a common denominator.
  4. Dec 15, 2004 #3
    That's for division by a fraction, in which case you multiply by the reciprocal.
  5. Dec 15, 2004 #4


    User Avatar
    Science Advisor

    Since the two denominators are x+2 and x+3 the common denominator will be (x+2)(x+3).

    It's just like 1/2+ 1/3= (1/2)(3/3)+ (1/3)(2/2)= 3/6+ 2/6= 5/6.
Share this great discussion with others via Reddit, Google+, Twitter, or Facebook