document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=266549>Question 266549</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Why you are using minus(-)instead of plus(+) in substitution? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #195836 by </B><A HREF=/tutors/aboutme.mpl?userid=stanbon><B>stanbon(75887)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=stanbon><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=195836\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Use minus if it eliminates a variable.<BR>\n" );
document.write( "Example:<BR>\n" );
document.write( "3x +y = 7<BR>\n" );
document.write( "3x -2y = 3<BR>\n" );
document.write( "Subtracting will eliminate the x-terms and allow you to solve for \"y\":<BR>\n" );
document.write( "----------------------------------------------<BR>\n" );
document.write( "Use plus if it eliminates a variable.<BR>\n" );
document.write( "3x + y = 7<BR>\n" );
document.write( "3x - y = 3<BR>\n" );
document.write( "Adding will eliminate the y-terms and allow you to solve for \"x\"<BR>\n" );
document.write( "Subtracting would eliminate the x-terms and allow you to solve for \"y\".<BR>\n" );
document.write( "-------------------------<BR>\n" );
document.write( "It's your choice.<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );