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Q&A #9409

Teachers' Lounge Discussion: Solving algebraic equations

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From: Loyd <loydlin@aol.com>
To: Teacher2Teacher Public Discussion
Date: 2005031711:02:43
Subject: Re: Simplifying

On 2005031616:43:46, Margarita wrote:
>	
>how do i simplify the following:
>
>8ab-2a
>--------
>6-24b
>
>please help me.  thanks
>

In the numerator, factor out common factor 2a.  In the denominator,
factor out common factor, 6.

This leaves:

2a(4b-1)
--------
6(1-4b)  Now notice that the signs of 1 and 4b in the denoninator are
reversed.  So we will revise the last step and factor out -6 vice +6.

2a(4b-1)
--------
-6(-1+4b)  rewrite:

2a (4b-1)
--------     (4b-1)cancels
-6 (4b-1)


-a
---  
 3  

Hope this helps.




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