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Subtract 3/8 from 21/48

21/48 - 3/8 is 1/16.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 48 and 8 is 48

    Next, find the equivalent fraction of both fractional numbers with denominator 48
  2. For the 1st fraction, since 48 × 1 = 48,
    21/48 = 21 × 1/48 × 1 = 21/48
  3. Likewise, for the 2nd fraction, since 8 × 6 = 48,
    3/8 = 3 × 6/8 × 6 = 18/48
  4. Subtract the two like fractions:
    21/48 - 18/48 = 21 - 18/48 = 3/48
  5. After reducing the fraction, the answer is 1/16

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