document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=897529>Question 897529</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hello. I hope I put this question in the correct topic. I am norwegian, and I don't know the English equivalent of my question. Anyway, here goes:\r<BR>\n" );
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document.write( "x+2y+3z=14           I<BR>\n" );
document.write( "4x-y-z=-1            II<BR>\n" );
document.write( "7x+5y+z=20           III\r<BR>\n" );
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document.write( "What is x, y and z? (If you can show it from where I last learned, and figured out, that would be great):<BR>\n" );
document.write( "x = 14-2y-3z<BR>\n" );
document.write( "-> 4(14-2y-3z)-y-z=-1<BR>\n" );
document.write( "-> 7(14-2y-3z)+5y+z=20\r<BR>\n" );
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document.write( "PS: I got<BR>\n" );
document.write( "-9y-13z=-57<BR>\n" );
document.write( "-9y-20z=-78         What then? (...if correct up to here)\r<BR>\n" );
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document.write( "Thank you so much in advance!! :) </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #544175 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=544175\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1,2,3,14<BR>\n" );
document.write( "4,-1,-1,-1<BR>\n" );
document.write( "7,5,1,20\r<BR>\n" );
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document.write( "add  down (-4) *row 1 to row 2<BR>\n" );
document.write( "1,2,3,14<BR>\n" );
document.write( "0,-9,-13,-57<BR>\n" );
document.write( "7,5,1,20\r<BR>\n" );
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document.write( "add  down (-7) *row 1 to row 3<BR>\n" );
document.write( "1,2,3,14<BR>\n" );
document.write( "0,-9,-13,-57<BR>\n" );
document.write( "0,-9,-20,-78\r<BR>\n" );
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document.write( "divide row 2 by -9<BR>\n" );
document.write( "1,2,3,14<BR>\n" );
document.write( "0,1,-13/-9,-57/-9<BR>\n" );
document.write( "0,-9,-20,-78\r<BR>\n" );
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document.write( "add  down (9) *row 2 to row 3<BR>\n" );
document.write( "1,2,3,14<BR>\n" );
document.write( "0,1,13/9,19/3<BR>\n" );
document.write( "0,0,-7,-21\r<BR>\n" );
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document.write( "divide row 3 by -7<BR>\n" );
document.write( "1,2,3,14<BR>\n" );
document.write( "0,1,13/9,19/3<BR>\n" );
document.write( "0,0,1,3\r<BR>\n" );
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document.write( "We now have the value for the last variable.<BR>\n" );
document.write( "We will work our way up and get the other solutions.\r<BR>\n" );
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document.write( "add up  (-13/9) *row 3 to row 2<BR>\n" );
document.write( "1,2,3,14<BR>\n" );
document.write( "0,1,0,2<BR>\n" );
document.write( "0,0,1,3\r<BR>\n" );
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document.write( "add up  (-3) *row 3 to row 1<BR>\n" );
document.write( "1,2,0,5<BR>\n" );
document.write( "0,1,0,2<BR>\n" );
document.write( "0,0,1,3\r<BR>\n" );
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document.write( "add up  (-2) *row 2 to row 1<BR>\n" );
document.write( "1,0,0,1<BR>\n" );
document.write( "0,1,0,2<BR>\n" );
document.write( "0,0,1,3\r<BR>\n" );
document.write( "<BR>\n" );
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document.write( "1,0,0,1<BR>\n" );
document.write( "0,1,0,2<BR>\n" );
document.write( "0,0,1,3<BR>\n" );
document.write( "\"1\",\"2\",\"3\"<BR>\n" );
document.write( "(1,2,3)<BR>\n" );
document.write( " </SPAN>\n" );
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