[
  "Convert both mixed numbers to improper fractions. Find the LCM of 2 and 3 (which is 6) as the common denominator, then add.",
  "1 1/2 = 3/2 = 9/6. 3 1/3 = 10/3 = 20/6. 9/6 + 20/6 = 29/6.",
  "29/6 = 4 5/6. Answer: 4 5/6 (option C)."
]