document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=896649>Question 896649</A>: <I><SPAN STYLE=\"word-break: break-all;\"> i keep doing this matrices<BR>\n" );
document.write( "2x-y+9x=-8<BR>\n" );
document.write( "-x-3y+4z=-15<BR>\n" );
document.write( "5x+2y-z=17 <BR>\n" );
document.write( " and i get a fraction at the end can you help me?\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #543686 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=543686\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 2x-y+9x=-8<BR>\n" );
document.write( "-x-3y+4z=-15<BR>\n" );
document.write( "5x+2y-z=17 \r<BR>\n" );
document.write( "\n" );
document.write( "Using Gauss Jordan <BR>\n" );
document.write( "2,-1,9,-8<BR>\n" );
document.write( "-1,-3,4,-15<BR>\n" );
document.write( "5,2,-1,17\r<BR>\n" );
document.write( "\n" );
document.write( "divide row 1 by 2<BR>\n" );
document.write( "1,-1/2,9/2,-4<BR>\n" );
document.write( "-1,-3,4,-15<BR>\n" );
document.write( "5,2,-1,17\r<BR>\n" );
document.write( "\n" );
document.write( "add  down (1) *row 1 to row 2<BR>\n" );
document.write( "1,-1/2,9/2,-4<BR>\n" );
document.write( "0,-7/2,17/2,-19<BR>\n" );
document.write( "5,2,-1,17\r<BR>\n" );
document.write( "\n" );
document.write( "add  down (-5) *row 1 to row 3<BR>\n" );
document.write( "1,-1/2,9/2,-4<BR>\n" );
document.write( "0,-7/2,17/2,-19<BR>\n" );
document.write( "0,9/2,-47/2,37\r<BR>\n" );
document.write( "\n" );
document.write( "divide row 2 by -7/2<BR>\n" );
document.write( "1,-1/2,9/2,-4<BR>\n" );
document.write( "0,1,34/-14,-38/-7<BR>\n" );
document.write( "0,9/2,-47/2,37\r<BR>\n" );
document.write( "\n" );
document.write( "add  down (-9/2) *row 2 to row 3<BR>\n" );
document.write( "1,-1/2,9/2,-4<BR>\n" );
document.write( "0,1,17/-7,38/7<BR>\n" );
document.write( "0,0,352/-28,176/14\r<BR>\n" );
document.write( "\n" );
document.write( "divide row 3 by 88/-7<BR>\n" );
document.write( "1,-1/2,9/2,-4<BR>\n" );
document.write( "0,1,17/-7,38/7<BR>\n" );
document.write( "0,0,1,-1\r<BR>\n" );
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document.write( "We now have the value for the last variable.<BR>\n" );
document.write( "We will work our way up and get the other solutions.\r<BR>\n" );
document.write( "\n" );
document.write( "add up  (-17/-7) *row 3 to row 2<BR>\n" );
document.write( "1,-1/2,9/2,-4<BR>\n" );
document.write( "0,1,0,3<BR>\n" );
document.write( "0,0,1,-1\r<BR>\n" );
document.write( "\n" );
document.write( "add up  (-9/2) *row 3 to row 1<BR>\n" );
document.write( "1,-2/4,0,1/2<BR>\n" );
document.write( "0,1,0,3<BR>\n" );
document.write( "0,0,1,-1\r<BR>\n" );
document.write( "\n" );
document.write( "add up  (1/2) *row 2 to row 1<BR>\n" );
document.write( "1,0,0,2<BR>\n" );
document.write( "0,1,0,3<BR>\n" );
document.write( "0,0,1,-1\r<BR>\n" );
document.write( "\n" );
document.write( "final<BR>\n" );
document.write( "1,0,0,2<BR>\n" );
document.write( "0,1,0,3<BR>\n" );
document.write( "0,0,1,-1\r<BR>\n" );
document.write( "\n" );
document.write( "1,0,0,2<BR>\n" );
document.write( "0,1,0,3<BR>\n" );
document.write( "0,0,1,-1<BR>\n" );
document.write( "\"2\",\"3\",\"-1\"<BR>\n" );
document.write( "(2,3,-1)<BR>\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );