document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131721>Question 1131721</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve this system of three equations in three unknowns:\r<BR>\n" );
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document.write( "1) x + y &#8722; z = 4<BR>\n" );
document.write( "2) x &#8722; 2 y + 3 z = &#8722;6<BR>\n" );
document.write( "3) 2 x + 3 y + z = 7 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #748375 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=748375\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> add 1 and 3 to eliminate z<BR>\n" );
document.write( "3x+4y=11<BR>\n" );
document.write( "add 3 times 1 to 2 to also eliminate z<BR>\n" );
document.write( "4x+y=6<BR>\n" );
document.write( "now multiply the second by -4 and add to the top one<BR>\n" );
document.write( "3x+4y=11<BR>\n" );
document.write( "-16x-4y=-24<BR>\n" );
document.write( "-13x=-13<BR>\n" );
document.write( "x=1<BR>\n" );
document.write( "therefore, y=2<BR>\n" );
document.write( "and z=-1<BR>\n" );
document.write( "(1, 2, -1)<BR>\n" );
document.write( " </SPAN>\n" );
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