document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=252580>Question 252580</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 3x+y-z=-1<BR>\n" );
document.write( "2y-z=5<BR>\n" );
document.write( "z=1 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #184562 by </B><A HREF=/tutors/aboutme.mpl?userid=drk><B>drk(1908)</B></A><img src=\"/images/stars/stars-12.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=drk><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=184562\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (i) 3x+y-z=-1<BR>\n" );
document.write( "(ii) 2y-z=5<BR>\n" );
document.write( "(iii) z=1<BR>\n" );
document.write( "This is quite straight forward. Z = 1. Put z into (ii) to get<BR>\n" );
document.write( "2y-1=5 - -> Y = 3.<BR>\n" );
document.write( "Put y and z into (i) to get<BR>\n" );
document.write( "3x+3-1 = -1 - - > 3x = -3 - -> x = -1.<BR>\n" );
document.write( "So, {-1,3,1} </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );