document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=57398>Question 57398</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do you go about solving the following:\r<BR>\n" );
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document.write( "2x+y-z=5<BR>\n" );
document.write( "3x-y+2z=-1<BR>\n" );
document.write( "x-y-z=19\r<BR>\n" );
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document.write( "try to solve this system using either elimination or substitution:<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #39144 by </B><A HREF=/tutors/aboutme.mpl?userid=Nate><B>Nate(3500)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Nate><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=39144\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 3x - y + 2z = -1<BR>\n" );
document.write( "-x + y + z = -19<BR>\n" );
document.write( "2x + 3z = -20 from elimination<BR>\n" );
document.write( "2x + y - z = 5<BR>\n" );
document.write( "x - y - z = 19<BR>\n" );
document.write( "3x - 2z = 24 from elimination<BR>\n" );
document.write( "(2x + 3z = -20)2<BR>\n" );
document.write( "(3x - 2z = 24)3<BR>\n" );
document.write( "4x + 6z = -40<BR>\n" );
document.write( "9x - 6z = 72<BR>\n" );
document.write( "13x = 32<BR>\n" );
document.write( "x = 32/13<BR>\n" );
document.write( "plug:<BR>\n" );
document.write( "3x - 2z = 24<BR>\n" );
document.write( "3(32/13) - 2z = 24<BR>\n" );
document.write( "96/13 - 2z = 312/13<BR>\n" );
document.write( "-2z = 216/13<BR>\n" );
document.write( "z = -108/13<BR>\n" );
document.write( "plug:<BR>\n" );
document.write( "x - y - z = 19<BR>\n" );
document.write( "32/13 - y + 108/13 = 247/13<BR>\n" );
document.write( "-y + 140/13 = 247/13<BR>\n" );
document.write( "-y = 107/13<BR>\n" );
document.write( "y = -107/13<BR>\n" );
document.write( "z = -108/13<BR>\n" );
document.write( "x = 32/13 </SPAN>\n" );
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