document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=3224>Question 3224</A>: <I><SPAN STYLE=\"word-break: break-all;\"> 10x+5 i need help with factoring </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #1407 by </B><A HREF=/tutors/aboutme.mpl?userid=Jessmh123><B>Jessmh123(22)</B></A><img src=\"/images/stars/stars-07.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=Jessmh123><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/images/nopicture.jpg><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=1407\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> lets say one book is x and the other is y<BR>\n" );
document.write( "we know that x+y=390<BR>\n" );
document.write( "one book is 40 more than 4 times the other, we can write that like like...<BR>\n" );
document.write( "x=4y+40<BR>\n" );
document.write( "now that we know what x is equal to, we can plug it back into our first equation, which was x+y=390.<BR>\n" );
document.write( "so...<BR>\n" );
document.write( "4y+40+y=390<BR>\n" );
document.write( "5y+40=390       (combime like terms)<BR>\n" );
document.write( "5y=350           (subtract 40 from each side)<BR>\n" );
document.write( "y=70              (divide by 5 on both sides to solve for y)\r<BR>\n" );
document.write( "\n" );
document.write( "now we know that one book has 70 pages, and now we can just subtract 70 from 390 to find out how many pages the other book has<BR>\n" );
document.write( "390-70=320\r<BR>\n" );
document.write( "\n" );
document.write( "one books had 70 pages and the other has 320<BR>\n" );
document.write( ":)     </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );