document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=298834>Question 298834</A>: <I><SPAN STYLE=\"word-break: break-all;\"> In the problem 3x+4y=6 5x+2y=-4  how do you know that you need to multiply by -2?<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 #214930 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=214930\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> In the problem 3x+4y=6 5x+2y=-4  how do you know that you need to multiply by -2?<BR>\n" );
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document.write( "3x+4y=6 <BR>\n" );
document.write( "5x+2y=-4<BR>\n" );
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document.write( "Multiplying eqn 2 by -2 will give -4 for the coefficient of y.  Then you can add and eliminate the y terms.<BR>\n" );
document.write( "That's not the only way to do it, tho.<BR>\n" );
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document.write( "You can multiply eqn 1 by 5 and eqn2 by 3, then subtract one from the other and eliminate x.  The x -2 is the simplest and easiest way (using elimination).<BR>\n" );
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document.write( "Back to your question:  how do you know that you need to multiply by -2?<BR>\n" );
document.write( "The answer is, you don't HAVE TO  multiply by -2. </SPAN>\n" );
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