Systems of Two Equations: Substitution Method

This collection of videos is part of a series of lessons on math provided by DeafTEC. Gary Blatto-Vallee, a math and science instructor at the National Technical Institute for the Deaf, guides viewers through a variety of mathematical exercises in this DeafTEC video series. All lessons are fully captioned, signed in ASL, and voiced. This collection includes the following four videos: System of 2 Equations (substitution method) #1, System of 2 Equations (substitution method) #2, System of 2 Equations (substitution method) inconsistent, and System of 2 Equations (substitution method) consistent.