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Add 3/84 and 15/45

3/84 + 15/45 is 31/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 45 is 1260
  2. For the 1st fraction, since 84 × 15 = 1260,
    3/84 = 3 × 15/84 × 15 = 45/1260
  3. Likewise, for the 2nd fraction, since 45 × 28 = 1260,
    15/45 = 15 × 28/45 × 28 = 420/1260
  4. Add the two fractions:
    45/1260 + 420/1260 = 45 + 420/1260 = 465/1260
  5. After reducing the fraction, the answer is 31/84

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