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Subtract 90/63 from 1/54

1st number: 1/54, 2nd number: 1 27/63

1/54 - 90/63 is -533/378.

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,
    1/54 = 1 × 7/54 × 7 = 7/378
  3. Likewise, for the 2nd fraction, since 63 × 6 = 378,
    90/63 = 90 × 6/63 × 6 = 540/378
  4. Subtract the two like fractions:
    7/378 - 540/378 = 7 - 540/378 = -533/378

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