document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1139578>Question 1139578</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by substitution<BR>\n" );
document.write( "2x+3y+2z=18<BR>\n" );
document.write( "-4x+y-z=5<BR>\n" );
document.write( "2z=-10 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #760062 by </B><A HREF=/tutors/aboutme.mpl?userid=dkppathak><B>dkppathak(439)</B></A><img src=\"/images/stars/stars-10.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=dkppathak><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=dkppathak><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=760062\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve by substitution<BR>\n" );
document.write( "2x+3y+2z=18<BR>\n" );
document.write( "-4x+y-z=5<BR>\n" );
document.write( "2z=-10<BR>\n" );
document.write( "solution<BR>\n" );
document.write( "z=10/2=5<BR>\n" );
document.write( "by substitute z=5<BR>\n" );
document.write( "-4x+y=10    y=10+4x  by substitution <BR>\n" );
document.write( "2x+3y=8<BR>\n" );
document.write( "2x+3(10+4x)=8<BR>\n" );
document.write( "2x+30+12x=8<BR>\n" );
document.write( "14x=8-30=-22<BR>\n" );
document.write( "x=-22/14=-11/7<BR>\n" );
document.write( "y=10+4x<BR>\n" );
document.write( "y=10-44/7<BR>\n" );
document.write( "y=70-44/7<BR>\n" );
document.write( "y=26/7<BR>\n" );
document.write( "answer<BR>\n" );
document.write( "x=-11/7    y=26/7    z=5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );