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Add 81/14 and 5/21

1st number: 5 11/14, 2nd number: 5/21

81/14 + 5/21 is 253/42.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 21 is 42

    Next, find the equivalent fraction of both fractional numbers with denominator 42
  2. For the 1st fraction, since 14 × 3 = 42,
    81/14 = 81 × 3/14 × 3 = 243/42
  3. Likewise, for the 2nd fraction, since 21 × 2 = 42,
    5/21 = 5 × 2/21 × 2 = 10/42
  4. Add the two like fractions:
    243/42 + 10/42 = 243 + 10/42 = 253/42
  5. So, 81/14 + 5/21 = 253/42
    In mixed form: 61/42

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