prompt: Xavier needs 84 paper plates for a housewarming party. He already has 21 green plates and 28 red plates. How many more plates should Xavier buy?
messages.content: Xavier needs 84 paper plates for a housewarming party. He already has 21 green plates and 28 red plates. How many more plates should Xavier buy?
messages.role: user
messages.content: The total number of green and red plates is 28 + 21 = <<28+21=49>>49.
  Xavier should buy 84 − 49 = 35 more plates.
  #### 35
messages.role: assistant