document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=978100>Question 978100</A>: <I><SPAN STYLE=\"word-break: break-all;\"> Here's the question and part of the solution.\r<BR>\n" );
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document.write( "How many ordered pairs (x,y) satisfy this system of equations:<BR>\n" );
document.write( "x = 2y + 5<BR>\n" );
document.write( "y = (2x-3)(x+9)\r<BR>\n" );
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document.write( "Here's part of the solution:<BR>\n" );
document.write( "Step 1. Substitute y in the 2nd equation into the first equation to get x = 2((2x-3)(x+9)) + 5\r<BR>\n" );
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document.write( "Step 2. The above = 4x^2 + 30x - 54\r<BR>\n" );
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document.write( "Step 3. The solution says this can be rewritten as: 4x^2 + 29x -54 = 0. \r<BR>\n" );
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document.write( "Here are my problems: What happened to the 5 on the end of the equation in Step 1? Where did the 29 come from in Step 3? \r<BR>\n" );
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document.write( "Thank you for any help?\r<BR>\n" );
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document.write( "Helen </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #599601 by </B><A HREF=/tutors/aboutme.mpl?userid=Boreal><B>Boreal(15235)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Boreal><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=Boreal><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=599601\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> (2x-3)(x+9)= 2x^2+15x-27\r<BR>\n" );
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document.write( "2 times that is 4x^2+30x-54<BR>\n" );
document.write( "but x=4x^2-30x-54]  ;; original equation was x=2y+5<BR>\n" );
document.write( "subtract x from both sides<BR>\n" );
document.write( "0=4x^2+29x-49<BR>\n" );
document.write( "You are right about the 5.  That has to be carried through. </SPAN>\n" );
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