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Subtract 1/27 from 6/21

6/21 - 1/27 is 47/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 27 is 189

    Next, find the equivalent fraction of both fractional numbers with denominator 189
  2. For the 1st fraction, since 21 × 9 = 189,
    6/21 = 6 × 9/21 × 9 = 54/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    1/27 = 1 × 7/27 × 7 = 7/189
  4. Subtract the two like fractions:
    54/189 - 7/189 = 54 - 7/189 = 47/189

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