
Algebra PreAlgebra and Basic Algebra Math Forum 
 LinkBack  Thread Tools  Display Modes 
September 8th, 2014, 07:13 PM  #1 
Member Joined: Jan 2014 Posts: 55 Thanks: 2  Rational expression
Hello again, I need help figuring this 7/x2=3/x2+4.The answer is 3.What am I doing wrong?Sorry I can't post all my working.I'm using an iPad.I don't know how to upload multiple picks here. Last edited by App; September 8th, 2014 at 07:19 PM. 
September 8th, 2014, 07:36 PM  #2  
Math Team Joined: May 2013 From: The Astral plane Posts: 2,042 Thanks: 815 Math Focus: Wibbly wobbly timeywimey stuff.  Quote:
$\displaystyle \frac{7}{x  2} = \frac{3}{x  2} + 4$ Multiply both sides by x  2. (We have to be clear here; we cannot let x = 2!) $\displaystyle 7 = 3 + 4(x  2)$ Can you finish from here? Dan  
September 8th, 2014, 08:40 PM  #3 
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 13,979 Thanks: 994  

Tags 
expression, rational 
Thread Tools  
Display Modes  

Similar Threads  
Thread  Thread Starter  Forum  Replies  Last Post 
A rational expression  guru123  Algebra  2  September 5th, 2013 08:02 PM 
Rational Expression word problem. Please Help  AKofTroy  Algebra  6  July 13th, 2013 05:19 PM 
Rational expression constants  lalex0710  Algebra  6  September 24th, 2012 03:18 PM 
rational expression  lalex0710  Algebra  5  September 23rd, 2012 04:17 PM 
rational expression  lalex0710  Algebra  1  September 13th, 2012 10:07 PM 