document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=149515>Question 149515</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I solve the following system of linear equation\r<BR>\n" );
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document.write( "5x + 4y = 40\r<BR>\n" );
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document.write( "x + 2y = 11 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #109699 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=109699\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do I solve the following system of linear equation <BR>\n" );
document.write( "5x + 4y = 40 <BR>\n" );
document.write( "x + 2y = 11<BR>\n" );
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document.write( "There's more than one way. I like determinants (I have an Excel sheet that does them).\r<BR>\n" );
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document.write( "5  4  -40<BR>\n" );
document.write( "1  2  -11<BR>\n" );
document.write( "Det = (5*2)-(1*4) = 6\r<BR>\n" );
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document.write( "x*Det = 4*(-11)-2*(-40) = 36<BR>\n" );
document.write( "x = 6<BR>\n" );
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document.write( "y*Det = -(5*(-11) - 1*(-40)) = 15<BR>\n" );
document.write( "y = 2.5<BR>\n" );
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