Genesis 5:6
Hebrew Bible
5 The entire lifetime of Adam was 930 years, and then he died. 6 When Seth had lived 105 years, he became the father of Enosh. 7 Seth lived 807 years after he became the father of Enosh, and he had other sons and daughters. 8 The entire lifetime of Seth was 912 years, and then he died.
LXX Genesis 5:6
Septuagint
5 And all the days of Adam, that he lived, amounted to nine hundred thirty years, and he died. 6 Now Seth lived two hundred five years and became the father of Enos. 7 And Seth lived after he became the father of Enos seven hundred seven years and had sons and daughters. 8 And all the days of Seth amounted to nine hundred twelve years, and he died.
Notes and References
"... The genealogy in LXX-G makes the same points as its MT counterpart, but its details are quite different. Whereas the time from creation to the flood covered 1,656 years in the Masoretic text, it covers 2,242 years in LXX-G. The same period between creation and flood in the Samaritan Pentateuch is only 1,307 years (Wevers 1993, 68). The first point at which LXX-G differs from the Masoretic is Adam’s age when he fathered Seth: MT reports that he was 130 years old; LXX-G reports that he was 230 years old. Although neither MT nor LXX-G has an explicit direct object for the verb ‘father’, it is obvious that it is Seth whom Adam fathered in his ‘form’ and image. Here LXX-G departs from the earlier ‘likeness’ (1:26) that, along with ‘image’, characterized the similarity between God and humans. In so doing, it also differs from the MT that repeats the two features of 1:26 here. The word, as Wevers maintains, “was clearly chosen to indicate that the generation took place in accordance with the ‘outward appearance’ or ‘form’ of Adam” (1993, 69). LXX-G again differs from the MT in the amount of time that Adam lived after fathering Seth. LXX-G reports that he lived 700 more years, while MT reports that he lived 800 additional years. Both, however, agree that Adam lived a total of 930 years before he died ..."
Brayford, Susan Septuagint Commentary Series: Genesis (p. 258) Brill, 2007