document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=35197>Question 35197</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Use Gaussian Elimination to reduce the augmented matrix for the following system of linear<BR>\n" );
document.write( "equations to upper triangular form, and use back-substitution to solve the system. <BR>\n" );
document.write( "x + y &#8722; z = 3; (1)<BR>\n" );
document.write( "&#8722;x + 2y + z = 0; (2)<BR>\n" );
document.write( "2x &#8722; y &#8722; z = 1. (3)<BR>\n" );
document.write( " The book gives the answer but not how to get the answer. Please i need to understand what they mean. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #21376 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><IMG SRC=http://www.algebra.com/images/aboutme-small.gif BORDER=0 alt=\"About Me\" VALIGN=MIDDLE></A>&nbsp;<IMG SRC=http://www.algebra.com/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=21376\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use Google with the search stream<BR>\n" );
document.write( "\"Math World Gaussian Elimination\" to<BR>\n" );
document.write( "see a nice example of what you need<BR>\n" );
document.write( "to do with this system of three <BR>\n" );
document.write( "equations in three unknowns.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );