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Add 8/21 and 27/28

8/21 + 27/28 is 113/84.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 28 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    8/21 = 8 × 4/21 × 4 = 32/84
  3. Likewise, for the 2nd fraction, since 28 × 3 = 84,
    27/28 = 27 × 3/28 × 3 = 81/84
  4. Add the two like fractions:
    32/84 + 81/84 = 32 + 81/84 = 113/84
  5. So, 8/21 + 27/28 = 113/84
    In mixed form: 129/84

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