Videos 3.6
A – System of 3 equations, by elimination. .. http://phschool.com/webcodes10/index.cfm?fuseaction=home.gotoWebCode&wcprefix=age&wcsuffix=0306
B – Solving equivalent systems. … http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-519s.html
C – Three equations by substitution…. http://www.phschool.com/atschool/academy123/english/academy123_content/wl-book-demo/ph-520s.html
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