document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=665449>Question 665449</A>: <I><SPAN STYLE=\"word-break: break-all;\"> a+b=7<BR>\n" );
document.write( "b+c=9<BR>\n" );
document.write( "a+c=8<BR>\n" );
document.write( "What is the value of abc?\r<BR>\n" );
document.write( "\n" );
document.write( "a+b+b+c= 7+8<BR>\n" );
document.write( "a+2b+c= 15<BR>\n" );
document.write( "a+c = 15-2b  and a+c=8\r<BR>\n" );
document.write( "\n" );
document.write( "so 8= 15-2b<BR>\n" );
document.write( "8-15 = -2b<BR>\n" );
document.write( "-7/-2 = b<BR>\n" );
document.write( "therefore b= 3.5     is this on the right track please?\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #413867 by </B><A HREF=/tutors/aboutme.mpl?userid=mananth><B>mananth(16946)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=mananth><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=mananth><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=413867\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> a+b=7<BR>\n" );
document.write( "b+c=9<BR>\n" );
document.write( "a+c=8\r<BR>\n" );
document.write( "\n" );
document.write( "a+b=7<BR>\n" );
document.write( "b+c=9\r<BR>\n" );
document.write( "\n" );
document.write( "subtract<BR>\n" );
document.write( "a-c= -2<BR>\n" );
document.write( "we have a+c=8\r<BR>\n" );
document.write( "\n" );
document.write( "add the two<BR>\n" );
document.write( "2a=6<BR>\n" );
document.write( "a=3\r<BR>\n" );
document.write( "\n" );
document.write( "if a=3 , a+b=7 so b=4<BR>\n" );
document.write( "if b=4 , b+c=9 so c=5\r<BR>\n" );
document.write( "\n" );
document.write( "a=3,b=4,c=5 </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );