{
  "question_id": 5105,
  "hints": [
    {
      "hint_level": 1,
      "hint": "Use the perimeter formula: P = 2(L + B)."
    },
    {
      "hint_level": 2,
      "hint": "L = z, B = z - 5."
    },
    {
      "hint_level": 3,
      "hint": "Simplify: 2(z + z - 5) = 4z - 10."
    }
  ]
}