document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=280334>Question 280334</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve by determinants 6x-21=3y, y=-2x+13 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #203781 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=203781\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve by determinants 6x-21=3y, y=-2x+13<BR>\n" );
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document.write( "2x-y = 7<BR>\n" );
document.write( "2x+y = 13<BR>\n" );
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document.write( "|2 -1 -7|<BR>\n" );
document.write( "|2 1 -13|<BR>\n" );
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document.write( "Det = 2+2 = 4<BR>\n" );
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document.write( "Det*x = 13+7 = 20<BR>\n" );
document.write( "x = 5<BR>\n" );
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document.write( "Det*y = 26-14 = 12<BR>\n" );
document.write( "y = 3\r<BR>\n" );
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