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Re: Eliminating common factors?

  • To: mathgroup at
  • Subject: [mg93318] Re: [mg93299] Eliminating common factors?
  • From: "David Park" <djmpark at>
  • Date: Tue, 4 Nov 2008 06:14:34 -0500 (EST)
  • References: <26063643.1225708610384.JavaMail.root@m02>

Is MathGroup becoming a LaTeX newsgroup? What is wrong with pasting ordinary
Mathematica expressions in InputForm?

In any case:

4 (a/4 + b/(4 c)) // FactorTerms
a + b/c

Or maybe:

4 (a/4 + b/(4 c)) // Together
(b + a c)/c

David Park
djmpark at 

From: AES [mailto:siegman at] 

I have a simple, totally algebraic symbolic calculation that displays 
its output in the form (rewritten here using TeX notation)

      4 ( {a \over 4 } + { b \over 4 c } )

where a, b and c are fairly simple products of purely algebraic 
quantities; \over is the TeX notation for a display fraction; and the 
curly brackets are just for TeX purposes and are not there in the actual 

Is there any Assumption for Simplify, or any other _simple_ way, to get 
rid of those (utterly!!!) superfluous 4's?

[I suppose the real question is, why doesn't M cancel 'em the hell out 
in the first place?!?!]

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