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Subtract 18/49 from 81/80

1st number: 1 1/80, 2nd number: 18/49

81/80 - 18/49 is 2529/3920.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 49 is 3920
  2. For the 1st fraction, since 80 × 49 = 3920,
    81/80 = 81 × 49/80 × 49 = 3969/3920
  3. Likewise, for the 2nd fraction, since 49 × 80 = 3920,
    18/49 = 18 × 80/49 × 80 = 1440/3920
  4. Subtract the two fractions:
    3969/3920 - 1440/3920 = 3969 - 1440/3920 = 2529/3920

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