SV#5: Unit J Concepts 3-4: Solving Three-Variable Systems with Gaussian Elimination & Solving Non-Square Systems

     In order to understand how to solve this problem, the viewer must pay special attention to the four steps of  Gaussian elimination. They are important to know, because they avoid the possibility of redundant or unnecessary work. Another thing that the viewer should take note of are the steps of checking answers using the Reduced-Row Echelon Form (RREF) feature on a graphing calculator.