If you have 90 pills from the pharmacy every 28 days, and you take 3 per day, but lost 8. You will end up with 82 when you lost the 8 pills. Does it tell you how many days you took the pills for or is it just asking what you have left after losing 8 of them?
Their sum can be both equal, or greater. If you have 3/8 and 6/8, you would get 9/8 or 1 and 1/8. Which is greater than 1. Also if you add 2/6 and 4/6, you get 6/6 or 1. proving that both are possible.