document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=208502>Question 208502</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve algebraically: 6x-3y+8z=4<BR>\n" );
document.write( "                    -x+9y--2z=2<BR>\n" );
document.write( "                     4x+6y-4z=3\r<BR>\n" );
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document.write( "A) (5/2, 5/3, -3/4)\r<BR>\n" );
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document.write( "B) (1,-2,-1)\r<BR>\n" );
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document.write( "C) (1/2, 1/3, 1/4)\r<BR>\n" );
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document.write( "d) (5, -2, 5/4)  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #158464 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=158464\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\">  solve algebraically: <BR>\n" );
document.write( "6x-3y+8z=4<BR>\n" );
document.write( "-x+9y--2z=2  ?? I'll assume the -- is a typo.<BR>\n" );
document.write( "4x+6y-4z=3 <BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "6x-3y+8z=4<BR>\n" );
document.write( "-x+9y-2z=2<BR>\n" );
document.write( "4x+6y-4z=3 <BR>\n" );
document.write( "----------<BR>\n" );
document.write( "I'll use elimination & substitution<BR>\n" );
document.write( "Since z has 2, 4 and 8 for coefficients, eliminate it<BR>\n" );
document.write( "-x+9y-2z=2 x2 --> -2x+18y-4z = 4<BR>\n" );
document.write( "+4x+6y-4z=3 <BR>\n" );
document.write( "-2x+18y-4z=4<BR>\n" );
document.write( "---------- Subtract<BR>\n" );
document.write( "6x-12y = -1  Eqn A<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "6x-3y+8z=4<BR>\n" );
document.write( "-x+9y-2z=2 x4 --> -4x+36y-8z=8<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "+6x-3y+8z=4<BR>\n" );
document.write( "-4x+36y-8z=8<BR>\n" );
document.write( "------------ Add<BR>\n" );
document.write( "2x+33y = 12 Eqn B<BR>\n" );
document.write( "6x-12y = -1  Eqn A<BR>\n" );
document.write( "6x+99y = 36 Eqn b x 3<BR>\n" );
document.write( "----------- Subtract<BR>\n" );
document.write( "-111y = -37<BR>\n" );
document.write( "y = 1/3<BR>\n" );
document.write( "Now sub for y into Eqn A or B to find x<BR>\n" );
document.write( "2x+33y = 12 Eqn B<BR>\n" );
document.write( "2x+11 = 12<BR>\n" );
document.write( "x = 1/2<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "Sub x & y into one of the originals to find z<BR>\n" );
document.write( "4x+6y-4z=3<BR>\n" );
document.write( "2 + 2 -4z = 3<BR>\n" );
document.write( "-4z = -1<BR>\n" );
document.write( "z = 1/4<BR>\n" );
document.write( " </SPAN>\n" );
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