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Re: How to get Mathematica to actually *add* fractions?

  • To: mathgroup at smc.vnet.net
  • Subject: [mg40545] Re: [mg40529] How to get Mathematica to actually *add* fractions?
  • From: "Y.A.Tesiram" <yas at pcomm.hfi.unimelb.edu.au>
  • Date: Wed, 9 Apr 2003 20:28:21 -0400 (EDT)
  • Sender: owner-wri-mathgroup at wolfram.com

Hi,
Use Factor,

(2/(3x)) + (6/x) + (x/(x + 3)) // Factor

Yas


On Wed, 9 Apr 2003, cdj wrote:

> Hi,
>
> Like the subject says, but take for example:
>
> (2/(3x)) + (6/x) + (x/(x + 3))
>
> Sending to the kernel simply gives:
>
> 20/3x + x/(3+x)
>
> What I wanted/hoped for was the common-denominator version:
>
> (3x^2 + 20x + 60)/(3x(x+3))
>
> Is there any way to get Mathematica to give the one-denominator
> version of sums of fractions?
>
> thanks,
>
> cdj
>
>



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