document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=315235>Question 315235</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need to figure out the numerical value of variables a,b,and c. 3a-5b+5c=21 </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #225531 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=225531\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> You can get a value of each variable in terms of the constants and other variables.<BR>\n" );
document.write( "As an example,<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3a-5b%2B5c=21 ALIGN=MIDDLE  ALT=\"3a-5b%2B5c=21\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=3a=21%2B5b-5c ALIGN=MIDDLE  ALT=\"3a=21%2B5b-5c\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=/cgi-bin/plot-formula.mpl?expression=a=%2821%2B5b-5c%29%2F3 ALIGN=MIDDLE  ALT=\"a=%2821%2B5b-5c%29%2F3\"   DISABLED_style= \"max-width:90%; height:auto;\" ><BR>\n" );
document.write( "From what you write, I'm assuming that's not what you're looking for.<BR>\n" );
document.write( "To get a numerical value for 3 variables, you need 3 independent equations that describe the relationships between the three variables.  </SPAN>\n" );
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