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Subtract 28/64 from 3/20

3/20 - 28/64 is -23/80.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 320
  2. For the 1st fraction, since 20 × 16 = 320,
    3/20 = 3 × 16/20 × 16 = 48/320
  3. Likewise, for the 2nd fraction, since 64 × 5 = 320,
    28/64 = 28 × 5/64 × 5 = 140/320
  4. Subtract the two like fractions:
    48/320 - 140/320 = 48 - 140/320 = -92/320
  5. After reducing the fraction, the answer is -23/80

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