document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=184629>Question 184629</A>: <I><SPAN STYLE=\"word-break: break-all;\"> I need help to solve this problem. \r<BR>\n" );
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document.write( "Solve the systems of equations by substitutions\r<BR>\n" );
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document.write( "5x + y = 9<BR>\n" );
document.write( "  y=4x           Type an ordered pair. </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #138562 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=138562\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> <font face=\"Times New Roman\" size=\"+2\">\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ 5x + y = 9\"><BR>\n" );
document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ y = 4x\">\r<BR>\n" );
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document.write( "Since you have an equation that expresses <i>y</i> in terms of <i>x</i>, just substitute the expression containing <i>x</i> into the other equation, thus:\r<BR>\n" );
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document.write( "<IMG STYLE=\"max-width:80%;\" SRC=\"/cgi-bin/rendertex.cgi?\LARGE \ \ \ \ \ \ \ \ \ \ 5x + y = 9 \ \ \Rightarrow\ \ 5x + 4x = 9\">\r<BR>\n" );
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document.write( "Solve for <i>x</i> to get your <i>x</i>-coordinate, and then substitute that value back into either of the equations and solve for the <i>y</i>-coordinate.  Express your answer as (x,y) once you have the proper values.\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" );
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