document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=870542>Question 870542</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Using back-substitution, solve the system of linear equations. \r<BR>\n" );
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document.write( "-8x - 7y - 8z = 10<BR>\n" );
document.write( "      4y + 9z = -4<BR>\n" );
document.write( "            z = 3 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #524943 by </B><A HREF=/tutors/aboutme.mpl?userid=Fombitz><B>Fombitz(32388)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Fombitz><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=Fombitz><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=524943\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=z=3 ALIGN=MIDDLE  ALT=\"z=3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4y+%2B+9%283%29+=+-4 ALIGN=MIDDLE  ALT=\"4y+%2B+9%283%29+=+-4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4y%2B27=-4 ALIGN=MIDDLE  ALT=\"4y%2B27=-4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4y=-31 ALIGN=MIDDLE  ALT=\"4y=-31\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=y=-31%2F4 ALIGN=MIDDLE  ALT=\"y=-31%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-8x+%2B7%2831%2F4%29+-+8%283%29+=+10 ALIGN=MIDDLE  ALT=\"-8x+%2B7%2831%2F4%29+-+8%283%29+=+10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-8x%2B217%2F4-24=10 ALIGN=MIDDLE  ALT=\"-8x%2B217%2F4-24=10\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-8x=34-217%2F4 ALIGN=MIDDLE  ALT=\"-8x=34-217%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-8x=136%2F4-217%2F4 ALIGN=MIDDLE  ALT=\"-8x=136%2F4-217%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-8x=-81%2F4 ALIGN=MIDDLE  ALT=\"-8x=-81%2F4\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=x=81%2F32 ALIGN=MIDDLE  ALT=\"x=81%2F32\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
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