Bill is q years old. How old will he in 6 years ? How old was he 4 years ago ?
Start with q years old.
In 6 years means we add since it's the future:
q + 6
4 years ago means we subtract since it's in the past:
q - 4
Start with q years old.
In 6 years means we add since it's the future:
q + 6
4 years ago means we subtract since it's in the past:
q - 4