document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=745577>Question 745577</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Solve by back substitution.<BR>\n" );
document.write( "x = -2 <BR>\n" );
document.write( "x + y + z = -1 <BR>\n" );
document.write( "2x + 2z = 0\r<BR>\n" );
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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 #453906 by </B><A HREF=/tutors/aboutme.mpl?userid=tommyt3rd><B>tommyt3rd(5050)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=tommyt3rd><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=tommyt3rd><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=453906\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 1---> x = -2 <BR>\n" );
document.write( "2---> x + y + z = -1 <BR>\n" );
document.write( "3---> 2x + 2z = 0\r<BR>\n" );
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document.write( "3---> 2(-2)+2z=0\r<BR>\n" );
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document.write( "2z=4<BR>\n" );
document.write( "z=2\r<BR>\n" );
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document.write( "2---> (-2)+y+(2)=-1\r<BR>\n" );
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document.write( "y=-1\r<BR>\n" );
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document.write( "solution: (-2,-1,2) </SPAN>\n" );
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