document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=952150>Question 952150</A>: <I><SPAN STYLE=\"word-break: break-all;\"> please help me with {2x+3y=0    x+2y=-1 where do i start<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #581494 by </B><A HREF=/tutors/aboutme.mpl?userid=macston><B>macston(5194)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=macston><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=macston><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=581494\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x+3y=0    <BR>\n" );
document.write( "x+2y=-1 Solve for x.<BR>\n" );
document.write( "x=-1-2y Substitute in first equation for x.<BR>\n" );
document.write( "2(-1-2y)+3y=0<BR>\n" );
document.write( "-2-4y+3y=0 Add 2 to each side<BR>\n" );
document.write( "-y=2 Multiply each side by -1.<BR>\n" );
document.write( "y=-2 ANSWER 1: y=-2 Use this value of y to back solve one of the original equations.<BR>\n" );
document.write( "2x+3y=0<BR>\n" );
document.write( "2x+3(-2)=0<BR>\n" );
document.write( "2x-6=0 Add 6 to each side.<BR>\n" );
document.write( "2x=6 Divide each side by 2.<BR>\n" );
document.write( "x=3 ANSWER 2: x=3 The solution to the system of equations is (3,-2).<BR>\n" );
document.write( "CHECK:<BR>\n" );
document.write( "Use equation not used for back solving:<BR>\n" );
document.write( "x+2y=-1<BR>\n" );
document.write( "3+2(-2)=-1<BR>\n" );
document.write( "3-4=-1<BR>\n" );
document.write( "-1=-1 </SPAN>\n" );
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