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Subtract 1/36 from 12/21

12/21 - 1/36 is 137/252.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 36 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 21 × 12 = 252,
    12/21 = 12 × 12/21 × 12 = 144/252
  3. Likewise, for the 2nd fraction, since 36 × 7 = 252,
    1/36 = 1 × 7/36 × 7 = 7/252
  4. Subtract the two like fractions:
    144/252 - 7/252 = 144 - 7/252 = 137/252

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