YOU SAID:

On your own from the age of 15.

INTO JAPANESE

自分で 15 歳から。

BACK INTO ENGLISH

From 15 years old by myself.

INTO JAPANESE

15 歳から自分で。

BACK INTO ENGLISH

15-year-old from yourself.

INTO JAPANESE

自分から 15 年古い。

BACK INTO ENGLISH

From his 15-year-old.

INTO JAPANESE

彼の 15 年古い。

BACK INTO ENGLISH

His 15-year-old.

INTO JAPANESE

彼の 15 年古い。

BACK INTO ENGLISH

His 15-year-old.