Im just going to try here.. First i'll work out how much water bottles are left there are 4 cases and each contain 12 bottles so thats 4 x 12 = 48 drink 3 bottles = 48 - 3 = 45 there are 45 bottles left Now im going to use the expression she used (12 - 3) x 4 = 36 Well then.. the answer is clearly wrong.. I would use: 4 x 12 - 3 so im sure the brackets are the mistake and that its the other way round.. so sorry if u find out its wrong.. its not often me seeing these type of questions.. ._.
