conversations.from: human
conversations.value: Please show me the solution for: In the second hour of a storm it rains 7 inches more than twice the amount it rained the first hour. The total amount of rain in the first two hours is 22 inches. How much did it rain in the first hour?
conversations.from: assistant
conversations.value: Let x be the amount of rain in the first hour
  It rained 2x+7 inches in the second hour.
  x+2x+7=22
  3x+7=22
  3x=15
  x=5 inches