document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=334974>Question 334974</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I am 50 yrs old, haven't used algebra since High School and now need it and can't remember what to do to solve the following equations for B and for N:<BR>\n" );
document.write( "0.63B + 0.37N = -8.4   and   0.56B  + 0.44N = -6.6\r<BR>\n" );
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document.write( "I know I need to pick one of the equations, determine the equation just for N, and then replace N in the other equation with that formula to solve for B.    eg, for the first equation  0.37N = -8.4 - 0.63B, now I am stuck as to how to solve for B? Is it N = (-8.4 - 0.63B)/0.37?  How do I perform the calculation to solve for B?   </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #240052 by </B><A HREF=/tutors/aboutme.mpl?userid=solver91311><B>solver91311(24713)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=solver91311><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=solver91311><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=240052\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Garamond\" size=\"+2\">\r<BR>\n" );
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document.write( "Your first step was correct.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ N\ =\ \frac{-8.4\ -\ 0.63B}{0.37}\">\r<BR>\n" );
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document.write( "Now take the right hand side mess and replace N in the second equation.\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ 0.56B\ +\ 0.44\left(\frac{-8.4\ -\ 0.63B}{0.37}\right)\ =\ -6.4\">\r<BR>\n" );
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document.write( "Now you have an equation, albeit an extremely ugly one, in one variable that can be solved by ordinary algebraic means.  Once you have a value for <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large B\">, you can substitute that value back into either of the original equations to produce a single-variable equation in <IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\Large N\">.\r<BR>\n" );
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document.write( "This is mostly just nasty arithmetic.  Enjoy.\r<BR>\n" );
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document.write( "John<BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE e^{i\pi} + 1 = 0\"><BR>\n" );
document.write( "My calculator said it, I believe it, that settles it<BR>\n" );
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