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Subtract 49/81 from 81/80

1st number: 1 1/80, 2nd number: 49/81

81/80 - 49/81 is 2641/6480.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 81 is 6480

    Next, find the equivalent fraction of both fractional numbers with denominator 6480
  2. For the 1st fraction, since 80 × 81 = 6480,
    81/80 = 81 × 81/80 × 81 = 6561/6480
  3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
    49/81 = 49 × 80/81 × 80 = 3920/6480
  4. Subtract the two like fractions:
    6561/6480 - 3920/6480 = 6561 - 3920/6480 = 2641/6480

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