My Math Forum equations of unknown help please.

 Algebra Pre-Algebra and Basic Algebra Math Forum

 February 28th, 2012, 07:38 PM #1 Senior Member   Joined: Jan 2012 Posts: 118 Thanks: 0 equations of unknown help please. I got the answer for these 2 questions, but I need to verify them, the questions are 2x-3(1-4x)=2(1+7x)-5 and x/2+1=x/3+2 Thank you for the help much appreciated. You don't have to show the work.
 February 28th, 2012, 07:43 PM #2 Senior Member     Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,155 Thanks: 463 Math Focus: Calculus/ODEs Re: eqautions of unknown help please. The first is an identity (true for all real values of x) and the second is true for x = 6.
 February 28th, 2012, 07:48 PM #3 Senior Member   Joined: Jan 2012 Posts: 118 Thanks: 0 Re: eqautions of unknown help please. Thank you Mark the first question I got right, but the second I think I messed up can you show me what you did for it?
 February 28th, 2012, 07:52 PM #4 Senior Member     Joined: Jul 2010 From: St. Augustine, FL., U.S.A.'s oldest city Posts: 12,155 Thanks: 463 Math Focus: Calculus/ODEs Re: eqautions of unknown help please. Sure: $\frac{x}{2}+1=\frac{x}{3}+2$ Subtract 1 from both sides: $\frac{x}{2}=\frac{x}{3}+1=\frac{x+3}{3}$ Cross-multiply: $3x=2(x+3)=2x+6$ Subtract 2x from both sides: $x=6$
 February 28th, 2012, 08:43 PM #5 Senior Member   Joined: Jan 2012 Posts: 118 Thanks: 0 Re: equations of unknown help please. Thank buddy. Your a great help =)

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