% Linear Algebra: Theory and Applications
% Ward Cheney & David Kincaid
% JBPub.com (c) 2008 
% File: exp8311.m
% Example 8.3.11

A = [0.3,0.1,0.3; 0.2,0.3,0.4; 0.4,0.5,0.2];
b = [12; 18; 15];
G = eye(3) - A
B = [G b]
rref(B)