document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=714517>Question 714517</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve the system <BR>\n" );
document.write( "Y = -5x<BR>\n" );
document.write( "X +0.8*y = -7.2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #438867 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley79><B>checkley79(3341)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley79><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=438867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Y = -5x<BR>\n" );
document.write( "X +0.8y = -7.2 REPLACE Y WITH -5X IN THE SECOND EQUATION & SOLVE FOR X.<BR>\n" );
document.write( "X+.8(-5X)=-7.2<BR>\n" );
document.write( "X-4X=-7.2<BR>\n" );
document.write( "-3X=-7.2<BR>\n" );
document.write( "X=-7.2/-3<BR>\n" );
document.write( "X=2.4 ANS.<BR>\n" );
document.write( "Y=-5*2.4<BR>\n" );
document.write( "Y=-12 ANS.<BR>\n" );
document.write( "PROOF:<BR>\n" );
document.write( "2.4+.8*-12=-7.2<BR>\n" );
document.write( "2.4-9.6=-7.2<BR>\n" );
document.write( "-7.2=-7.2 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );