document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=392167>Question 392167</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve using the substitution method.\r<BR>\n" );
document.write( "\n" );
document.write( "6x+7y=-14\r<BR>\n" );
document.write( "\n" );
document.write( "x=21-7y </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #278338 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=278338\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 6x+7y=-14\r<BR>\n" );
document.write( "\n" );
document.write( "x=21-7y<BR>\n" );
document.write( "...<BR>\n" );
document.write( "substitute the value of x in the first equation<BR>\n" );
document.write( "6(21-7y)+7y=-14<BR>\n" );
document.write( "126-42y+7y=-14<BR>\n" );
document.write( "-35y=-126-14<BR>\n" );
document.write( "-35y=-140<BR>\n" );
document.write( "/-35<BR>\n" );
document.write( "y=-140/-35<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28highlight%28y+=+4%29%29 ALIGN=MIDDLE  ALT=\"%28highlight%28y+=+4%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( ".<BR>\n" );
document.write( "plug value of y in first equation<BR>\n" );
document.write( "6x+7y=-14<BR>\n" );
document.write( "6x+7*4=-14<BR>\n" );
document.write( "6x+28=-14<BR>\n" );
document.write( "6x=-28-14<BR>\n" );
document.write( "6x=-42<BR>\n" );
document.write( "/6<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28highlight%28x=+-7%29%29 ALIGN=MIDDLE  ALT=\"%28highlight%28x=+-7%29%29\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "..<BR>\n" );
document.write( "m.ananth@hotmail.ca </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );