ADAM AND EVE CREATED SAME YEAR says Jehovah's channel:
INSIGHT BOOK # 1 p. 772 Eve
When Adam was 130 years old, Eve gave birth to a son whom she called Seth, saying: "God has appointed another seed in place of Abel, because Cain killed him." She could properly express herself as she did at the births of both Cain and Seth, since God had given her and Adam their reproductive powers, and because of God’s unmerited kindness in not putting her to death immediately when she transgressed His command, she had been able to give birth. With the birth of Seth the Genesis record concerning Eve comes to a close.—Ge 4:25; 5:3, 4.
INSIGHT BOOK # 2 p. 899 Seth
Seth: The son of Adam and Eve born when Adam was 130 years old.
So we read that Adam was "a hundred and thirty years"of age when he became father to Seth. (Aid To Bible Understanding,TWB&TS p. 277)
EVE: BIRTHS OF CHILDREN
At the birth of her first son Cain,outside paradise, Eve exclaimed :"I have acquired a man with the aid of Jehovah ."(Gen .4 :1)Interestingly,Eve is the first one reported using God's name,indicating that the name Jehovah was known to the very first humans. Later she gave birth to Abel as well at to other sons and daughters .At the age of 130 another son was born to her .Eve called his name Seth,saying :"God has appointed another seed in place of Abel,because Cain killed him . (Aid To Bible Understanding,TWB&TS p.538)