document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=711436>Question 711436</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Hi, I am confused about this problem and was wondering if you could help me.\r<BR>\n" );
document.write( "\n" );
document.write( "Solve the system of equations by substitution:\r<BR>\n" );
document.write( "\n" );
document.write( "x + 3y = 1<BR>\n" );
document.write( "-3x - 3y = -1\r<BR>\n" );
document.write( "\n" );
document.write( "I already tried to solve this and ended up with x=0 and I was not able to go from there. It would be great if you could help me. Thank you </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #437408 by </B><A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><B>josgarithmetic(39618)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=josgarithmetic><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=437408\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> EDIT: I first said this, which is wrong: \"That is the same equation written in two different ways.\"\r<BR>\n" );
document.write( "<BR>\n" );
document.write( "\n" );
document.write( "The correct explanation is that the slope of the two equations is the same.  The lines are parallel, so do not intersect.  They have NO point in common.  <BR>\n" );
document.write( "   </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );