document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=612685>Question 612685</A>: <I><SPAN STYLE=\"word-break: break-all;\"> solve using cramer's rule:<BR>\n" );
document.write( "4x-3y=-7<BR>\n" );
document.write( "3x-9y=15<BR>\n" );
document.write( "x=?, y=?\r<BR>\n" );
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document.write( "i put these equations in the augmented matrix form, but i was stuck on how to actually solve the equation. i thought that you were only able to solve cramers rule if you are given a square matrix.\r<BR>\n" );
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document.write( "can you please help me solve this equation? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #385668 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=385668\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> solve using cramer's rule:<BR>\n" );
document.write( "4x-3y=-7<BR>\n" );
document.write( "3x-9y=15<BR>\n" );
document.write( "-----------<BR>\n" );
document.write( "Det = -36+9 = -27<BR>\n" );
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document.write( "For x:<BR>\n" );
document.write( "-7 -3<BR>\n" );
document.write( "15 -9<BR>\n" );
document.write( "--> 63 + 45 = 108<BR>\n" );
document.write( "x = -4<BR>\n" );
document.write( "===============<BR>\n" );
document.write( "For y:<BR>\n" );
document.write( "4 -7<BR>\n" );
document.write( "3 15<BR>\n" );
document.write( "--> 60 + 21 = 81<BR>\n" );
document.write( "x = -3 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );