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May 1st, 2009, 06:42 PM  #1 
Newbie Joined: May 2009 Posts: 1 Thanks: 0  Changing the subject of a formula
Ok, this most likely will be a silly question but im having trouble trying to make X the subject of the formula XA +BA = B im hoping someone is able to enlighten me Thanks 
May 6th, 2009, 06:23 PM  #2 
Senior Member Joined: Oct 2007 From: Chicago Posts: 1,701 Thanks: 3  Re: Changing the subject of a formula
Do you mean solve for X? I assume these are matrices: If A is invertible, factor A out on the right, multiply by the inverse of A, then subtract B.


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