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 #84962 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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/cgi-bin/show-face.mpl?user=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=84962\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> the object is to use row operations to get\r<BR>\n" );
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document.write( "1__0__0__x<BR>\n" );
document.write( "0__1__0__y<BR>\n" );
document.write( "0__0__1__z\r<BR>\n" );
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document.write( "subtracting the first row from the third row; and subtracting twice the first row from the second row gives<BR>\n" );
document.write( "1__3__-6__7<BR>\n" );
document.write( "0__-7__14__-14<BR>\n" );
document.write( "0__-2__8__-8\r<BR>\n" );
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document.write( "dividing the second row by -7; and dividing the third row by -2 gives<BR>\n" );
document.write( "1__3__-6__7<BR>\n" );
document.write( "0__1__-2__2<BR>\n" );
document.write( "0__1__-4__4\r<BR>\n" );
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document.write( "subtracting the second row from the third row; and subtracting 3 times the second row from the first row gives<BR>\n" );
document.write( "1__0__0__1<BR>\n" );
document.write( "0__1__-2__2<BR>\n" );
document.write( "0__0__-2__2\r<BR>\n" );
document.write( "<BR>\n" );
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document.write( "subtracting the third row from the second row; and dividing the third row by -2 gives<BR>\n" );
document.write( "1__0__0__1<BR>\n" );
document.write( "0__1__0__0<BR>\n" );
document.write( "0__0__1__-1\r<BR>\n" );
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document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );