conversations.from: human
conversations.value: The three angles of a triangle add up to 180 degrees.  The largest angle is 5 times bigger than the smallest. The middle angle is 3 times bigger than the smallest. How many degrees is the smallest angle?
  How to solve this?
conversations.from: assistant
conversations.value: Let x be the smallest angle.
  The combination of the three is x + 3x + 5x = 9x.
  Thus 9x = 180.
  So x = 20.