Solving Systems Using Augmented Matrices Date: 11/05/96 at
19:10:46 From: Dan Emmons Subject: Solving Systems Using
Augmented Matrices Hi! I have been having trouble trying to
figure out how to do this. Please help. Here are the directions
that were given to me: Write the augmented matrix for the linear
system. Use "elementary row operations" to write the system in
triangular form. Then use substitution to solve for each
variable. The elementary row operations of matrix terminology
consist of these three things : 1. Interchanging 2 equations. 2.
Multiplying an equation by a nonzero constant. 3. Adding a
multiple of an equation to another equation. Here are the three
equations to use: 2x - 3y - 5z = 1 1x - 2y = 12 -4x + 6y + 7z =
-23 Thank you for your help. Date: 11/06/96 at 11:36:06 From:
Doctor Pete Subject: Re: Solving Systems Using Augmented
Matrices I will solve a similar problem using the method you
describe: Find x, y, z such that 2x - 3y + z = -1 y - z = 5 x +
y + 4z = 0 . Step 1. Express the system o