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In this video I show you how to use matrices to solve systems of linear equations. The idea
is to put the system in triangular form and then, use back substitution. We do that using the
three allowed row operations on the augmented matrix: 1) interchange any two rows. 2) Multiply
a row by a non-zro number and 3) Replace any row by the sum of itself and a multiple of another row.
Prof. Serna. Math, Statistics & Physics Tutor. Miami.
10300 SW 72nd Street, Suite 460-5, Miami, FL 33173.