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Subtract 21/80 from 3/5

3/5 - 21/80 is 27/80.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 80 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 5 × 16 = 80,
    3/5 = 3 × 16/5 × 16 = 48/80
  3. Likewise, for the 2nd fraction, since 80 × 1 = 80,
    21/80 = 21 × 1/80 × 1 = 21/80
  4. Subtract the two like fractions:
    48/80 - 21/80 = 48 - 21/80 = 27/80

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