document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=116853>Question 116853</A>This question is from textbook <A HREF=http://www.amazon.com/exec/obidos/ASIN/9780321334336/algebrahomeworkh>mathematics with applications</A><BR>\n" );
document.write( ": <I><SPAN STYLE=\"word-break: break-all;\"> I can not figure out how to begin this problem let alone complete it. We are using the Gauss-Jordan Method. I refered to the website http://aspire.cs.uah.edu/textbook/gauss.html and the website http://math.uww.edu/~mcfarlat/141/141gauss.htm for assistance and thought I understood what i was doing but I can not get to the answer that is in the back of the book for this problem. The answer in the book is (1,0,-1)\r<BR>\n" );
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document.write( "The problem is as follows....<BR>\n" );
document.write( "x+3y-6x=7<BR>\n" );
document.write( "2x-y+2z=0<BR>\n" );
document.write( "x+y+2z=-1\r<BR>\n" );
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document.write( "the first part I think I got<BR>\n" );
document.write( "1    3    -6    7<BR>\n" );
document.write( "2    -1    2    0<BR>\n" );
document.write( "1    1    2    -1\r<BR>\n" );
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document.write( "Can you please help me.\r<BR>\n" );
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document.write( "Thank you so much!!!!!! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #84964 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=84964\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> The problem is as follows....<BR>\n" );
document.write( "x+3y-6x=7<BR>\n" );
document.write( "2x-y+2z=0<BR>\n" );
document.write( "x+y+2z=-1 <BR>\n" );
document.write( "the first part I think I got<BR>\n" );
document.write( "1 3 -6 7<BR>\n" );
document.write( "2 -1 2 0<BR>\n" );
document.write( "1 1 2 -1 <BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Subtract the 1st row from the 3rd<BR>\n" );
document.write( "Multiply the 1st row by -2 and add to the 2nd<BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "1  3 -6    7<BR>\n" );
document.write( "0 -7  14  -14<BR>\n" );
document.write( "0 -2  8   -8<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "Divide thru the 3rd row by -2<BR>\n" );
document.write( "Divide thru the 2nd row by -7<BR>\n" );
document.write( "---------------<BR>\n" );
document.write( "1  3 -6    7<BR>\n" );
document.write( "0  1 -2    2<BR>\n" );
document.write( "0  1 -4    4<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "Subtract the 2nd row from the 3rd<BR>\n" );
document.write( "-----------------------<BR>\n" );
document.write( "1  3 -6    7<BR>\n" );
document.write( "0  1 -2    2<BR>\n" );
document.write( "0  0 -2    2<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "Divide thru 3rd row by -2<BR>\n" );
document.write( "----------------<BR>\n" );
document.write( "1  3 -6    7<BR>\n" );
document.write( "0  1 -2    2<BR>\n" );
document.write( "0  0  1   -1<BR>\n" );
document.write( "-------------------<BR>\n" );
document.write( "Multiply 3rd row by 2 and add to 2nd row<BR>\n" );
document.write( "Multiply 3rd row by 6 and add to 1st row<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "1  3  0    1<BR>\n" );
document.write( "0  1  0    0<BR>\n" );
document.write( "0  0  1   -1<BR>\n" );
document.write( "----------------------<BR>\n" );
document.write( "Multiply 2nd row by -3 and add to 1st<BR>\n" );
document.write( "---------------------<BR>\n" );
document.write( "1  0  0    1<BR>\n" );
document.write( "0  1  0    0<BR>\n" );
document.write( "0  0  1   -1<BR>\n" );
document.write( "--------------<BR>\n" );
document.write( "x = 1<BR>\n" );
document.write( "y = 0<BR>\n" );
document.write( "z = -1<BR>\n" );
document.write( "=============<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H.\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );