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June 3rd, 2011, 12:17 PM  #1 
Newbie Joined: Jun 2009 Posts: 28 Thanks: 1  Algebra question
Hi, I need to know the value of the expression (3  x)/(x + 3). I know that an expression such as (x  3)/(3  x) would equal 1, but I am not sure what the value of the prior expression would be. Thanks. 
June 3rd, 2011, 01:10 PM  #2 
Senior Member Joined: Nov 2010 Posts: 288 Thanks: 1  Re: Algebra question
Hello there, this expression doesn't have a certain value. I mean its value depends on the value of x. For example: for x=1 you have 1/2 for x=3 you have 0 for x=2 you have 5 and so on .... best regards. 
June 3rd, 2011, 01:14 PM  #3 
Newbie Joined: Jun 2011 Posts: 20 Thanks: 0  Re: Algebra question
This expression doesn't have a fixed value; it can change while x is changing. There is one value of x where your expression doesn't exist and that is when x=3 then you would have to divide by zero and that isn't possible. link: here you can see this function. 
June 3rd, 2011, 01:44 PM  #4 
Math Team Joined: Apr 2010 Posts: 2,778 Thanks: 361  Re: Algebra question is variable 

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