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October 31st, 2013, 09:12 AM  #1 
Newbie Joined: Jan 2010 Posts: 6 Thanks: 0  Algebra problem
I want to make B the subject, but i don't know how to. Please may someone tell me how it's done? Code: (AB)/B = C Rob 
October 31st, 2013, 09:16 AM  #2 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,929 Thanks: 1124 Math Focus: Elementary mathematics and beyond  Re: Algebra problem
(A  B)/B = C A/B  1 = C A/B = C + 1 A = B(C + 1) 
October 31st, 2013, 09:19 AM  #3  
Newbie Joined: Jan 2010 Posts: 6 Thanks: 0  Re: Algebra problem Quote:
Hi, Thanks for that. I originally made my original post wrong. I'm actually looking for B, not A. Although, i have to ask, how did you get the 1 on your second line. I'm puzzled by how this has happened. Please may you explain?  
October 31st, 2013, 09:22 AM  #4 
Global Moderator Joined: Oct 2008 From: London, Ontario, Canada  The Forest City Posts: 7,929 Thanks: 1124 Math Focus: Elementary mathematics and beyond  Re: Algebra problem
(A  B)/B = A/B  B/B = A/B  1

October 31st, 2013, 09:26 AM  #5  
Newbie Joined: Jan 2010 Posts: 6 Thanks: 0  Re: Algebra problem Quote:
And with that explanation, i am also able to get the B that i'm looking for.  
October 31st, 2013, 10:47 AM  #6  
Math Team Joined: Oct 2011 From: Ottawa Ontario, Canada Posts: 14,280 Thanks: 1023  Re: Algebra problem Quote:
A  B = BC BC + B = A B(C + 1) = A B = A / (C + 1)  

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