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Add 12/49 and 21/54

12/49 + 21/54 is 559/882.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 49 and 54 is 2646
  2. For the 1st fraction, since 49 × 54 = 2646,
    12/49 = 12 × 54/49 × 54 = 648/2646
  3. Likewise, for the 2nd fraction, since 54 × 49 = 2646,
    21/54 = 21 × 49/54 × 49 = 1029/2646
  4. Add the two fractions:
    648/2646 + 1029/2646 = 648 + 1029/2646 = 1677/2646
  5. After reducing the fraction, the answer is 559/882

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