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Subtract 20/27 from 42/54

42/54 - 20/27 is 1/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 54 and 27 is 54

    Next, find the equivalent fraction of both fractional numbers with denominator 54
  2. For the 1st fraction, since 54 × 1 = 54,
    42/54 = 42 × 1/54 × 1 = 42/54
  3. Likewise, for the 2nd fraction, since 27 × 2 = 54,
    20/27 = 20 × 2/27 × 2 = 40/54
  4. Subtract the two like fractions:
    42/54 - 40/54 = 42 - 40/54 = 2/54
  5. After reducing the fraction, the answer is 1/27

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