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Subtract 3/90 from 1/54

1/54 - 3/90 is -2/135.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 90 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 54 × 5 = 270,
    1/54 = 1 × 5/54 × 5 = 5/270
  3. Likewise, for the 2nd fraction, since 90 × 3 = 270,
    3/90 = 3 × 3/90 × 3 = 9/270
  4. Subtract the two like fractions:
    5/270 - 9/270 = 5 - 9/270 = -4/270
  5. After reducing the fraction, the answer is -2/135

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