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Add 15/84 and 12/63

15/84 + 12/63 is 31/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 63 is 252
  2. For the 1st fraction, since 84 × 3 = 252,
    15/84 = 15 × 3/84 × 3 = 45/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    12/63 = 12 × 4/63 × 4 = 48/252
  4. Add the two fractions:
    45/252 + 48/252 = 45 + 48/252 = 93/252
  5. After reducing the fraction, the answer is 31/84

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