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Subtract 20/54 from 5/15

5/15 - 20/54 is -1/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 54 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 15 × 18 = 270,
    5/15 = 5 × 18/15 × 18 = 90/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    20/54 = 20 × 5/54 × 5 = 100/270
  4. Subtract the two like fractions:
    90/270 - 100/270 = 90 - 100/270 = -10/270
  5. After reducing the fraction, the answer is -1/27

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