document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=546456>Question 546456</A>: <I><SPAN STYLE=\"word-break: break-all;\"> how do you use the substitution method for the problem x+y=4<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 #355980 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=355980\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> x+y=4<BR>\n" );
document.write( "y=3x\r<BR>\n" );
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document.write( "substitute y in first equation\r<BR>\n" );
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document.write( "x+3x=4<BR>\n" );
document.write( "4x=4<BR>\n" );
document.write( "/4<BR>\n" );
document.write( "x=1<BR>\n" );
document.write( "so y=3\r<BR>\n" );
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document.write( "because x+y=4 </SPAN>\n" );
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