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Subtract 81/84 from 84/80

1st number: 1 4/80, 2nd number: 81/84

84/80 - 81/84 is 3/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 84 is 1680

    Next, find the equivalent fraction of both fractional numbers with denominator 1680
  2. For the 1st fraction, since 80 × 21 = 1680,
    84/80 = 84 × 21/80 × 21 = 1764/1680
  3. Likewise, for the 2nd fraction, since 84 × 20 = 1680,
    81/84 = 81 × 20/84 × 20 = 1620/1680
  4. Subtract the two like fractions:
    1764/1680 - 1620/1680 = 1764 - 1620/1680 = 144/1680
  5. After reducing the fraction, the answer is 3/35

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