{
  "question_id": 5117,
  "hints": [
    {
      "hint_level": 1,
      "hint": "Simplify first: combine like terms."
    },
    {
      "hint_level": 2,
      "hint": "4t + t = 5t, 10 - 7 = 3, giving 5t + 3."
    },
    {
      "hint_level": 3,
      "hint": "Substitute t = 5: 5(5) + 3 = 28."
    }
  ]
}