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Subtract 21/80 from 1/3

1/3 - 21/80 is 17/240.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 3 and 80 is 240

    Next, find the equivalent fraction of both fractional numbers with denominator 240
  2. For the 1st fraction, since 3 × 80 = 240,
    1/3 = 1 × 80/3 × 80 = 80/240
  3. Likewise, for the 2nd fraction, since 80 × 3 = 240,
    21/80 = 21 × 3/80 × 3 = 63/240
  4. Subtract the two like fractions:
    80/240 - 63/240 = 80 - 63/240 = 17/240

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