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Subtract 15/20 from 3/64

3/64 - 15/20 is -45/64.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 64 and 20 is 320

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 64 × 5 = 320,
    3/64 = 3 × 5/64 × 5 = 15/320
  3. Likewise, for the 2nd fraction, since 20 × 16 = 320,
    15/20 = 15 × 16/20 × 16 = 240/320
  4. Subtract the two like fractions:
    15/320 - 240/320 = 15 - 240/320 = -225/320
  5. After reducing the fraction, the answer is -45/64

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