document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=59615>Question 59615</A>: <I><SPAN STYLE=\"word-break: break-all;\"> THIS IS FOR SUBSTITUTION EQUATION. ITS\r<BR>\n" );
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document.write( "X+3Y=-4<BR>\n" );
document.write( "Y+X=0 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #40890 by </B><A HREF=/tutors/aboutme.mpl?userid=funmath><B>funmath(2933)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=funmath><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=40890\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> THIS IS FOR SUBSTITUTION EQUATION. ITS\r<BR>\n" );
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document.write( " E1) X+3Y=-4<BR>\n" );
document.write( "E2) Y+X=0<BR>\n" );
document.write( "Solve E2 for y and substitute that into E1 and solve for x<BR>\n" );
document.write( "y+x=0<BR>\n" );
document.write( "y+x-x=0-x<BR>\n" );
document.write( "y=-x<BR>\n" );
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document.write( "x+3(-x)=-4<BR>\n" );
document.write( "x-3x=-4<BR>\n" );
document.write( "-2x=-4<BR>\n" );
document.write( "-2x/-2=-4/-2<BR>\n" );
document.write( "x=2<BR>\n" );
document.write( "Now substitute that into E2 and solve for y<BR>\n" );
document.write( "y+2=0<BR>\n" );
document.write( "y+2-2=0-2<BR>\n" );
document.write( "y=-2<BR>\n" );
document.write( "The solution: (x,y)=(2,-2)<BR>\n" );
document.write( "Happy Calculating!!! </SPAN>\n" );
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