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Add 12/21 and 63/54

1st number: 12/21, 2nd number: 1 9/54

12/21 + 63/54 is 73/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 54 is 378
  2. For the 1st fraction, since 21 × 18 = 378,
    12/21 = 12 × 18/21 × 18 = 216/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    63/54 = 63 × 7/54 × 7 = 441/378
  4. Add the two fractions:
    216/378 + 441/378 = 216 + 441/378 = 657/378
  5. After reducing the fraction, the answer is 73/42
  6. In mixed form: 131/42

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