document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1015473>Question 1015473</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hey there, I have recently been set a simultaneous equations hwk that up till now I have found rather easy! My problem occurs at a new type of question I have not been taught about. I will provide 2 questions for reference: <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2x-y%2B1=0 ALIGN=MIDDLE  ALT=\"2x-y%2B1=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x%2B2y%2B4=0 ALIGN=MIDDLE  ALT=\"3x%2B2y%2B4=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the first pair. The 2nd is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3x-y%2B5=0 ALIGN=MIDDLE  ALT=\"3x-y%2B5=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > and <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=5x%2By-13=0 ALIGN=MIDDLE  ALT=\"5x%2By-13=0\"   DISABLED_style= \"max-width:90%; height:auto;\" > is the other pair. I believe that I need to +/-the single integer with no algebraic term, to make it not equal 0, and the rearrange and substitute in. However, when I do this, say with the 2nd, I get <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=-9 ALIGN=MIDDLE  ALT=\"x=-9\"   DISABLED_style= \"max-width:90%; height:auto;\" >, which I know isn't right, as a friend showed me the answer. But I want to understand how I get there! As the answer is <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=1 ALIGN=MIDDLE  ALT=\"x=1\"   DISABLED_style= \"max-width:90%; height:auto;\" >. Thanks for reading and helping me out! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #631824 by </B><A HREF=/tutors/aboutme.mpl?userid=Alan3354><B>Alan3354(69443)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Alan3354><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=Alan3354><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=631824\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x - y + 1 = 0<BR>\n" );
document.write( "3x + 2y + 4 = 0<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "4x - 2y + 2 = 0  1st eqn times 2<BR>\n" );
document.write( "3x + 2y + 4 = 0<BR>\n" );
document.write( "--------------------- Add<BR>\n" );
document.write( "7x + 6 = 0<BR>\n" );
document.write( "x = -6/7<BR>\n" );
document.write( "y = 2x + 1 (1st eqn)<BR>\n" );
document.write( "y = -5/7<BR>\n" );
document.write( "=====================<BR>\n" );
document.write( "3x - y + 5 = 0<BR>\n" );
document.write( "5x + y - 13 =0<BR>\n" );
document.write( "----------------------- Add<BR>\n" );
document.write( "8x - 8 = 0<BR>\n" );
document.write( "x = 1<BR>\n" );
document.write( "=====================================\r<BR>\n" );
document.write( "\n" );
document.write( "---<BR>\n" );
document.write( "y = 8<BR>\n" );
document.write( "================<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );