document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=652720>Question 652720</A>: <I><SPAN STYLE=\"word-break: break-all;\"> My son and I are trying to figure out how to solve each system by elimination.  When we try to put the matrice in the online matrice calculators, we can't figure out how to do it.  We are also struggling to do this the long way.   His first problem is:\r<BR>\n" );
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document.write( "Solve each system by elimination:<BR>\n" );
document.write( "x+y+z=-1<BR>\n" );
document.write( "2x-y+2z=-5<BR>\n" );
document.write( "-x+2y-z=4\r<BR>\n" );
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document.write( "If you could explain how to do it the long way, and or how to put it in the online matrice calculator, would be a great help!<BR>\n" );
document.write( "Thank you! </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #408090 by </B><A HREF=/tutors/aboutme.mpl?userid=Shana-D77><B>Shana-D77(132)</B></A><img src=\"/images/stars/stars-09.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Shana-D77><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=Shana-D77><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=408090\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> Start by adding the first and third equations.  You'll get y=1.<BR>\n" );
document.write( "From there you will notice something strange.  If you plug 1 in for all of the y's in all 3 equations, you will find that all three equations are exactly the same.  This was a teacher trick!  There are infinite solutions! </SPAN>\n" );
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