Stumped on an easy fraction problem

  • Thread starter AznBoi
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Main Question or Discussion Point

Here is the fraction that I don't know how to combine and simplify, please help me out! Thanks! =]

[tex]\frac{5}{a} + \frac{4}{2a-6} + \frac {-4a}{a^{2}-9}[/tex]

I found the common denominator I think: (x+3)(x-3) .. but how do you make {a} in that form?
 

Answers and Replies

cristo
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If I write it as [tex]\frac{5}{a}+\frac{2}{(a-3)}-\frac{4a}{(a+3)(a-3)}[/tex] does it help?
 
Last edited:
cristo
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Ok, I didn't see the bit you'd edited. The common denominator will be a(a+3)(a-3).
 
471
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oh ok, I knew there wasn't a way to make {a} into {(a+3)(a-3)}. Thanks for your help! =]
 
cristo
Staff Emeritus
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You're very welcome!
 

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