Lexie is 6 years older than her brother and her sister is twice her age. If Lexie is 8, what is the age difference between her brother and her sister?
Lexie's brother is 8 - 6 = <T>subtract(8, 6)=2 years old.
Her sister is 8 x 2 = <T>multiply(8, 2)=16 years old.
The age difference between her brother and sister is 16 - 2 = <T>subtract(16, 2)=14 years.
