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Add 12/21 and 3/24

12/21 + 3/24 is 39/56.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 24 is 168
  2. For the 1st fraction, since 21 × 8 = 168,
    12/21 = 12 × 8/21 × 8 = 96/168
  3. Likewise, for the 2nd fraction, since 24 × 7 = 168,
    3/24 = 3 × 7/24 × 7 = 21/168
  4. Add the two fractions:
    96/168 + 21/168 = 96 + 21/168 = 117/168
  5. After reducing the fraction, the answer is 39/56

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