document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=233966>Question 233966</A>: <I><SPAN STYLE=\"word-break: break-all;\"> This equation has a { on the left side. I do not understand how to solve for x,y and z. I know I have to pair up equations  but each attempt proves useless. \r<BR>\n" );
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document.write( "5x + 4y - z =1<BR>\n" );
document.write( "2x - 2y + z = 1<BR>\n" );
document.write( "- x - y + z = 2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #172581 by </B><A HREF=/tutors/aboutme.mpl?userid=scott8148><B>scott8148(6628)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=scott8148><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=scott8148><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=172581\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> adding 1st eqn and 2nd eqn ___ 7x + 2y = 2 ___ multiplying by 3 ___ 21x + 6y = 6 (A)\r<BR>\n" );
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document.write( "adding 1st eqn and 3rd eqn ___ 4x + 3y = 3 ___ multiplying by -2 ___ -8x - 6y = -6 (B)\r<BR>\n" );
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document.write( "adding eqn (A) and eqn (B) ___ 13x = 0 ___ x = 0\r<BR>\n" );
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document.write( "substituting ___ 7(0) + 2y = 2 ___ y = 1\r<BR>\n" );
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document.write( "substituting ___ 5(0) + 4(1) - z = 1 ___ z = 3\r<BR>\n" );
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