1/3+1/15+1/35+1/63+1/99
=5/15+1/15+1/35+1/63+1/99
=2/5+1/35+1/63+1/99
=14/35+1/35+1/63+1/99
=3/7+1/63+1/99
=27/63+1/63+1/99
=4/9+1/99
=44/99+1/99
=5/11
1/3+1/15+1/35+1/63+1/99
=5/15+1/15+1/35+1/63+1/99
=2/5+1/35+1/63+1/99
=14/35+1/35+1/63+1/99
=3/7+1/63+1/99
=27/63+1/63+1/99
=4/9+1/99
=44/99+1/99
=5/11