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Subtract 81/12 from 20/14

1st number: 1 6/14, 2nd number: 6 9/12

20/14 - 81/12 is -149/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 14 and 12 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 14 × 6 = 84,
    20/14 = 20 × 6/14 × 6 = 120/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    81/12 = 81 × 7/12 × 7 = 567/84
  4. Subtract the two like fractions:
    120/84 - 567/84 = 120 - 567/84 = -447/84
  5. After reducing the fraction, the answer is -149/28

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