conversations.from: human
conversations.value: Agnes is 25 years old and her daughter, Jane is 6 years old. In how many years will Agnes be twice as old as Jane?
conversations.from: assistant
conversations.value: Let the number of years after which Agnes will be twice as old as Jane be x
  After x years, 25+x = 2(6+x)
  Solving the equation by expanding and collecting like terms gives: x-2x = 12-25
  Further solving gives: -x = -13
  Multiplying both sides by -1 gives x = 13