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Subtract 5/12 from 64/21

1st number: 3 1/21, 2nd number: 5/12

64/21 - 5/12 is 221/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 12 is 84

    Next, find the equivalent fraction of both fractional numbers with denominator 84
  2. For the 1st fraction, since 21 × 4 = 84,
    64/21 = 64 × 4/21 × 4 = 256/84
  3. Likewise, for the 2nd fraction, since 12 × 7 = 84,
    5/12 = 5 × 7/12 × 7 = 35/84
  4. Subtract the two like fractions:
    256/84 - 35/84 = 256 - 35/84 = 221/84
  5. In mixed form: 253/84

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