Systems of Equations Using Elimination with Adding, Subtracting, and Multiplying Examples
Channel: Lamee Storage
Date: 28/11/2012

As an added thought to this video, I should mention that, personally, I rarely ever use subtraction when I'm doing elimination because I'm very visual.  I'd much rather use addition and cancel out terms with opposite signs, which you can do in any situation that you would use subtraction by multiplying one of the equations by -1.  For instance in the subtraction problem, I would have multiplied -6x + 2y = -24 by -1 to give me  6x - 2y = -24.  This leaves me with x terms that (to me) obviously cancel out and then makes it easy to combine the other terms.