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Subtract 1/21 from 7/36

7/36 - 1/21 is 37/252.

Steps for subtracting fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 36 × 7 = 252,
    7/36 = 7 × 7/36 × 7 = 49/252
  3. Likewise, for the 2nd fraction, since 21 × 12 = 252,
    1/21 = 1 × 12/21 × 12 = 12/252
  4. Subtract the two like fractions:
    49/252 - 12/252 = 49 - 12/252 = 37/252

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