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Subtract 8/12 from 27/21

1st number: 1 6/21, 2nd number: 8/12

27/21 - 8/12 is 13/21.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 12 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    27/21 = 27 × 4/21 × 4 = 108/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    8/12 = 8 × 7/12 × 7 = 56/84
  4. Subtract the two like fractions:
    108/84 - 56/84 = 108 - 56/84 = 52/84
  5. After reducing the fraction, the answer is 13/21

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