document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=49587>Question 49587</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 2x-4y=7<BR>\n" );
document.write( "4x+2y=9\r<BR>\n" );
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document.write( "Solve the system by addition. I used the solver but it didn't make sense to me. Can you explain this in more detail please. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #32954 by </B><A HREF=/tutors/aboutme.mpl?userid=checkley71><B>checkley71(8403)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=checkley71><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=32954\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x-4y=7 & 4x+2y=9 multiply this second equation by 2 we get 8x+4y=18 now add<BR>\n" );
document.write( "4x+4y=18<BR>\n" );
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document.write( "6x=25 or x=25/6 now substituting 25/6 for x in equation we get\r<BR>\n" );
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document.write( "2*25/6-4y=7 or 50/6-4y=7 or -4y=7-50/6 or -4y=(42-50)/6 or -4y=-8/6 or\r<BR>\n" );
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document.write( "y=(8/6)/4 or y=8/24 or y=1/3\r<BR>\n" );
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document.write( "NOTE: The reason for multiplying the equation by 2 is to obtain a +4y term so we can add the two equations & eliminate the y terms (-4y+4y=0). Now we can solve for x.   </SPAN>\n" );
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