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Subtract 21/25 from 1/15

1/15 - 21/25 is -58/75.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 25 is 75

    Next, find the equivalent fraction of both fractional numbers with denominator 75
  2. For the 1st fraction, since 15 × 5 = 75,
    1/15 = 1 × 5/15 × 5 = 5/75
  3. Likewise, for the 2nd fraction, since 25 × 3 = 75,
    21/25 = 21 × 3/25 × 3 = 63/75
  4. Subtract the two like fractions:
    5/75 - 63/75 = 5 - 63/75 = -58/75

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