document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=630236>Question 630236</A>: <I><SPAN STYLE=\"word-break: break-all;\"> A 580-ft wide river spanned by a bridge, which has 1/6 of its length on the east bank and 1/7 of its length on the west bank. How long was the bridge? </SPAN>\n" );
document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #396788 by </B><A HREF=/tutors/aboutme.mpl?userid=nerdybill><B>nerdybill(7384)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=nerdybill><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=nerdybill><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=396788\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> A 580-ft wide river spanned by a bridge, which has 1/6 of its length on the east bank and 1/7 of its length on the west bank. How long was the bridge?<BR>\n" );
document.write( ".<BR>\n" );
document.write( "Let x = length of bridge<BR>\n" );
document.write( "then<BR>\n" );
document.write( "580 = x - (1/7 + 1/6)x<BR>\n" );
document.write( "580 = x - (6/42 + 7/42)x<BR>\n" );
document.write( "580 = x - (13/42)x<BR>\n" );
document.write( "580 = x(1 - (13/42))<BR>\n" );
document.write( "580 = x(42/42 - 13/42)<BR>\n" );
document.write( "580 = x(29/42)<BR>\n" );
document.write( "580(42/29) = x<BR>\n" );
document.write( "20(42) = x<BR>\n" );
document.write( "840 feet = x\r<BR>\n" );
document.write( "\n" );
document.write( " </SPAN>\n" );
document.write( "</TD></TR></TABLE>\n" );