(F.2数学)求列式please?

Let the weight of milk candies in packet A be 2x kg, the weight of peanut candies in packet B be x kg, the weight of milk candies in packet B be 3y kg, and the weight of peanut candies in packet A be y kg.
→2x+y=2...①，x+3y=2...②
→②×2−①得y=0.4，代入②得x=0.8
→The weights of milk candies in packets A and B are 1.6 and 1.2 kg, respectively.