[
  "Convert each mixed number to an improper fraction: 1 2/3 = 5/3, 1 2/5 = 7/5.",
  "Find LCD of 3 and 5 (which is 15). Convert: 5/3 = 25/15, 7/5 = 21/15.",
  "Add: 25/15 + 21/15 = 46/15 = 3 1/15."
]