(1) 17 sheep, 1/2, 1/3, 1/9.
Borrow one from a neighbor and return it to the neighbor after sharing.
Borrow *** 18 sheep
Nine eldest sons, six second sons and two third sons,
Return the rest.
(1) 1 1 sheep, 1/2, 1/4, 1/6.
Borrow one from a neighbor and return it to the neighbor after sharing.
Borrow *** 12 sheep
Six eldest sons, three second sons and two third sons,
Return the rest.