conversations.from: human
conversations.value: Can you give me some step-by-step instructions for this math problem: Issac has to buy pens and pencils for the upcoming school year. Issac buys 108 writing utensils total. He buys 12 more than 5 times the number of pencils than pens. How many pens did Issac buy?
conversations.from: assistant
conversations.value: Let x be the number of pens bought
  He bought 12+5x pencils
  x+(12+5x)=108
  6x+12=108
  6x=96
  x=16 pens