document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=907873>Question 907873</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How do I use cramer's rule to solve the system of equation:<BR>\n" );
document.write( "-3x-4y=9<BR>\n" );
document.write( "9x+10y=-3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #550691 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=550691\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> How do I use cramer's rule to solve the system of equation:<BR>\n" );
document.write( " -3x-4y=9<BR>\n" );
document.write( " 9x+10y=-3<BR>\n" );
document.write( "----<BR>\n" );
document.write( "The coefficient matrix determinant = (-3*10)-(-4*9) = 6<BR>\n" );
document.write( "----<BR>\n" );
document.write( "The X-matrix determinant = (9*10)-(-3*-4) = 78<BR>\n" );
document.write( "The Y-matrix determinant = (-3*-3)- (9*9) = 9-81 = -72<BR>\n" );
document.write( "--------<BR>\n" );
document.write( "x = 78/6 = 13<BR>\n" );
document.write( "y = -72/6 = -12<BR>\n" );
document.write( " <BR>\n" );
document.write( "--------------------<BR>\n" );
document.write( "Cheers,<BR>\n" );
document.write( "Stan H. </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );