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Subtract 8/54 from 4/7

4/7 - 8/54 is 80/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 7 × 54 = 378,
    4/7 = 4 × 54/7 × 54 = 216/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    8/54 = 8 × 7/54 × 7 = 56/378
  4. Subtract the two like fractions:
    216/378 - 56/378 = 216 - 56/378 = 160/378
  5. After reducing the fraction, the answer is 80/189

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