document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=564692>Question 564692</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you solve y=4x and y=-x-15 by substitution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #365437 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=365437\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> y=4x \r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( " y=-x-15 \r<BR>\n" );
document.write( "\n" );
document.write( "substitute y<BR>\n" );
document.write( "4x=-x-15<BR>\n" );
document.write( "+x<BR>\n" );
document.write( "5x=-15<BR>\n" );
document.write( "/5<BR>\n" );
document.write( "x=-3\r<BR>\n" );
document.write( "\n" );
document.write( "y=4x<BR>\n" );
document.write( "y=4*-3<BR>\n" );
document.write( "y=-12 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );