document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=1131109>Question 1131109</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Find the value of (b+c+d)/2 for the following system:\r<BR>\n" );
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document.write( "2b - (c + d) = 10<BR>\n" );
document.write( "        c + d  = - 2b - 2 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #747717 by </B><A HREF=/tutors/aboutme.mpl?userid=MathLover1><B>MathLover1(20850)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=MathLover1><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=MathLover1><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=747717\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <BR>\n" );
document.write( "Find the value of <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28b%2Bc%2Bd%29%2F2+ ALIGN=MIDDLE  ALT=\"%28b%2Bc%2Bd%29%2F2+\"   DISABLED_style= \"max-width:90%; height:auto;\" >for the following system:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b+-+%28c+%2B+d%29+=+10 ALIGN=MIDDLE  ALT=\"2b+-+%28c+%2B+d%29+=+10\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........eq.1<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+c+%2B+d++=+-+2b+-+2 ALIGN=MIDDLE  ALT=\"+c+%2B+d++=+-+2b+-+2\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........eq.2<BR>\n" );
document.write( "------------------------------------------add eq.1 and eq.2\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b+-+%28c+%2B+d%29%2B%28+c+%2B+d+%29+=+10-+2b+-+2 ALIGN=MIDDLE  ALT=\"2b+-+%28c+%2B+d%29%2B%28+c+%2B+d+%29+=+10-+2b+-+2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b+-+cross%28%28c+%2B+d%29%29%2Bcross%28%28+c+%2B+d+%29%29+=+8-+2b+ ALIGN=MIDDLE  ALT=\"2b+-+cross%28%28c+%2B+d%29%29%2Bcross%28%28+c+%2B+d+%29%29+=+8-+2b+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b++=+8-+2b+ ALIGN=MIDDLE  ALT=\"2b++=+8-+2b+\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b+%2B2b+=+8 ALIGN=MIDDLE  ALT=\"2b+%2B2b+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4b+=+8 ALIGN=MIDDLE  ALT=\"4b+=+8\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b+=+2 ALIGN=MIDDLE  ALT=\"b+=+2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "go to<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=2b+-+%28c+%2B+d%29+=+10 ALIGN=MIDDLE  ALT=\"2b+-+%28c+%2B+d%29+=+10\"   DISABLED_style= \"max-width:90%; height:auto;\" >.........eq.1..substitute <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=b ALIGN=MIDDLE  ALT=\"b\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=4-+%28c+%2B+d%29+=+10 ALIGN=MIDDLE  ALT=\"4-+%28c+%2B+d%29+=+10\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-+%28c+%2B+d%29+=+10-4 ALIGN=MIDDLE  ALT=\"+-+%28c+%2B+d%29+=+10-4\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+-+%28c+%2B+d%29+=+6 ALIGN=MIDDLE  ALT=\"+-+%28c+%2B+d%29+=+6\"   DISABLED_style= \"max-width:90%; height:auto;\" >...both sides multiply by <IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=-1 ALIGN=MIDDLE  ALT=\"-1\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=+%28c+%2B+d%29+=+-6 ALIGN=MIDDLE  ALT=\"+%28c+%2B+d%29+=+-6\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( "then\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=%28b%2B%28c%2Bd%29%29%2F2+=%282%2B%28-6%29%29%2F2=%282-6%29%2F2=-4%2F2=-2 ALIGN=MIDDLE  ALT=\"%28b%2B%28c%2Bd%29%29%2F2+=%282%2B%28-6%29%29%2F2=%282-6%29%2F2=-4%2F2=-2\"   DISABLED_style= \"max-width:90%; height:auto;\" >\r<BR>\n" );
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document.write( " </SPAN>\n" );
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