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Subtract 30/63 from 10/54

10/54 - 30/63 is -55/189.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 63 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 54 × 7 = 378,
    10/54 = 10 × 7/54 × 7 = 70/378
  3. Likewise, for the 2nd fraction, since 63 × 6 = 378,
    30/63 = 30 × 6/63 × 6 = 180/378
  4. Subtract the two like fractions:
    70/378 - 180/378 = 70 - 180/378 = -110/378
  5. After reducing the fraction, the answer is -55/189

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