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Subtract 5/54 from 20/12

1st number: 1 8/12, 2nd number: 5/54

20/12 - 5/54 is 85/54.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 54 is 108

    Next, find the equivalent fraction of both fractional numbers with denominator 108
  2. For the 1st fraction, since 12 × 9 = 108,
    20/12 = 20 × 9/12 × 9 = 180/108
  3. Likewise, for the 2nd fraction, since 54 × 2 = 108,
    5/54 = 5 × 2/54 × 2 = 10/108
  4. Subtract the two like fractions:
    180/108 - 10/108 = 180 - 10/108 = 170/108
  5. After reducing the fraction, the answer is 85/54
  6. In mixed form: 131/54

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