document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=752968>Question 752968</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do you solve this problem using the substitution method?\r<BR>\n" );
document.write( "\n" );
document.write( "5x+4y=7<BR>\n" );
document.write( "y=-3x </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #458150 by </B><A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><B>jim_thompson5910(35256)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=jim_thompson5910><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=458150\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> since y = -3x, we can replace the 'y' in the first equation with '-3x'\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "so we go from\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "5x+4<font color=\"red\">y</font>=7\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "to\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "5x + 4(<font color=\"red\">-3x</font>) = 7\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "then multiply to get\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "5x - 12x = 7\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "Keep going to solve for x. Once you've found x, plug it into y = -3x to find y. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );