Gaussian Elimination to Solve a 3 by 3 System of Equations

This video has three objectives: 2 - Explains what is an augmented matrix 2 - Explains what is a matrix in row echelon form 2 - Use the Gaussian Elimination method to rewrite the augmented matrix in row echelon form 3 - Use back substitution to solve the system. The augmented matrix is written from the given system and then rewritten in row echelon form. We then rewrite the system and solve it by back substitution. More at https://www.analyzemath.com/linear-algebra.html More at https://www.analyzemath.com/high_school_math/grade_11/grade-11-practice.html More math videos at https://www.analyzemath.com/math-videos.html. More math problems with solutions at https://www.analyzemath.com More grade 12 math practice at https://www.analyzemath.com/high_school_math/grade_12/grade-12-practice.html Subscribe to my channel to get more videos on math for all levels https://www.youtube.com/channel/UC2cmvDflm86w7C_D7QmcOVA? sub_confirmation=1