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Subtract 1/27 from 5/7

5/7 - 1/27 is 128/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 27 is 189
  2. For the 1st fraction, since 7 × 27 = 189,
    5/7 = 5 × 27/7 × 27 = 135/189
  3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
    1/27 = 1 × 7/27 × 7 = 7/189
  4. Subtract the two fractions:
    135/189 - 7/189 = 135 - 7/189 = 128/189

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