Complex sentence: In the original 1961 Act, the marriageable age was set at 16 for females and 18 for males, but the age was equalised in 1991 by the Sex Discrimination Amendment Act 1991 which raised the marriageable age of females to 18.
Split into simpler sentences: In the original 1961 Act, the marriageable age was set at 16 for females and 18 for males. The age was equalised in 1991 by the Sex Discrimination Amendment Act 1991 by raising the marriageable age of females to 18.