Parallel
Exodus 12:4
Brenton's English Septuagint · Berean Standard Bible
And if they be few in a household, so that there are not enough for the lamb, he shall take with himself his neighbour that lives near to him,—as to the number of souls, every one according to that which suffices him shall make a reckoning for the lamb.
If the household is too small for a whole lamb, they are to share with the nearest neighbor based on the number of people, and apportion the lamb accordingly.