document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=217100>Question 217100</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by Cramer's Rule x=dx/d, y=dy/d, and z=dz/d\r<BR>\n" );
document.write( "\n" );
document.write( "2x-y+3z=9<BR>\n" );
document.write( "x+4y+4z=5<BR>\n" );
document.write( "3x+2y+2z=5\r<BR>\n" );
document.write( "\n" );
document.write( "I have worked this problem and I know it is not right because of the numbers I am getting. I do have that D is -40. I have dx is -20. I have dy is 210 and dz is 156. Something is not right in the way I set up teh matrix. Thanks for your help. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #163741 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=163741\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> D is -40<BR>\n" );
document.write( "----------<BR>\n" );
document.write( "For Dx:<BR>\n" );
document.write( "|9 -1 3|<BR>\n" );
document.write( "|5 +4 4|<BR>\n" );
document.write( "|5 +2 2|\r<BR>\n" );
document.write( "\n" );
document.write( "= 9(8-8) + 1(10-20) + 3(10-20)<BR>\n" );
document.write( "= -10 -30<BR>\n" );
document.write( "= -40<BR>\n" );
document.write( "x = +1<BR>\n" );
document.write( "------<BR>\n" );
document.write( "For Dy:<BR>\n" );
document.write( "|2 9 3|<BR>\n" );
document.write( "|1 5 4|<BR>\n" );
document.write( "|3 5 2|\r<BR>\n" );
document.write( "\n" );
document.write( "= 2(10-20) - 9(2-12) + 3(5-15)<BR>\n" );
document.write( "= -20 +90 -30 = +40<BR>\n" );
document.write( "y = -1<BR>\n" );
document.write( "-------<BR>\n" );
document.write( "For Dz:<BR>\n" );
document.write( "|2 -1 9|<BR>\n" );
document.write( "|1 +4 5|<BR>\n" );
document.write( "|3  2 5|\r<BR>\n" );
document.write( "\n" );
document.write( "= 2(20-10) + 1(5-15) + 9(2-12)<BR>\n" );
document.write( "= 20 - 10 -90<BR>\n" );
document.write( "= -80<BR>\n" );
document.write( "z = 2 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );