Thursday, March 10, 2011

7.1 Systems of Equations

Substitution
http://www.youtube.com/watch?v=cwHR_B9zK7k

Elimination
http://www.youtube.com/watch?v=ej25myhYcSg&feature=relmfu

Three Variables!
http://www.youtube.com/watch?v=aPKz7011lAA&feature=relmfu

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