document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=938109>Question 938109</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Look at these cards. You can see two of the expressions. The third is hidden. \r<BR>\n" );
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document.write( "5x-7 and 5x. Third = ?\r<BR>\n" );
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document.write( "The mean value is 5x. \r<BR>\n" );
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document.write( "What is the hidden expression.  </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #571441 by </B><A HREF=/tutors/aboutme.mpl?userid=Danielshinmath><B>Danielshinmath(31)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Danielshinmath><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=Danielshinmath><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=571441\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> 5x times 3 is 15x.<BR>\n" );
document.write( "so 5x+5x-7+ something is 15x<BR>\n" );
document.write( "So if you need to cancel the 7 out, you need the +7.<BR>\n" );
document.write( "So it is 5x+7 for the third number. </SPAN>\n" );
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