document.write( "<A HREF=/cgi-bin/jump-to-question.mpl?question=289844>Question 289844</A>: <I><SPAN STYLE=\"word-break: break-all;\"> How many ordered pairs (x; y) of positive integers x and y satisfy the equation <BR>\n" );
document.write( "3x+5y = 80?<BR>\n" );
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document.write( "</I><HR><TABLE width=100%><TR><TD><B><A HREF=http://www.algebra.com/>Algebra.Com's</A> Answer #209840 by </B><A HREF=/tutors/aboutme.mpl?userid=richwmiller><B>richwmiller(17219)</B></A><img src=\"/images/stars/stars-13.gif\" alt=\"\" >&nbsp;<A HREF=/tutors/aboutme.mpl?userid=richwmiller><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=richwmiller><BR>You can <A HREF=\"/cgi-bin/embed-solution.mpl?show=1&solution=209840\">put this solution on YOUR website!</A><BR><SPAN STYLE=\"word-break: break-all;\"> when x=0 y=16<BR>\n" );
document.write( "when y=0 x=80/3=28.8<BR>\n" );
document.write( "so the positive y has to be less than 16 and the positive x has to be less than 29<BR>\n" );
document.write( "3x+5y=80<BR>\n" );
document.write( "x must be a multiple of 5 less than 29<BR>\n" );
document.write( "there are five possible positive  integer solutions\r<BR>\n" );
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