document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=127055>Question 127055</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I do not understand this at all.\r<BR>\n" );
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document.write( "Try solving out system of equation with four variables. x + y + z + w = 0  x + y - z - w = 1; x - y + z + w = 3; x - y - z + w = -1.<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #93074 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=93074\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Try solving out system of equation with four variables. <BR>\n" );
document.write( "x + y + z + w =  0  <BR>\n" );
document.write( "x + y - z - w =  1<BR>\n" );
document.write( "x - y + z + w =  3<BR>\n" );
document.write( "x - y - z + w = -1\r<BR>\n" );
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document.write( "I used the Matrix function of a TI calculator to get the following:<BR>\n" );
document.write( "x = 2<BR>\n" );
document.write( "y = -3/2<BR>\n" );
document.write( "z = 2<BR>\n" );
document.write( "w = -5/2<BR>\n" );
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document.write( "Cheers,<BR>\n" );
document.write( "Stan H.<BR>\n" );
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