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Subtract 2/54 from 28/21

1st number: 1 7/21, 2nd number: 2/54

28/21 - 2/54 is 35/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 21 and 54 is 378

    Next, find the equivalent fraction of both fractional numbers with denominator 378
  2. For the 1st fraction, since 21 × 18 = 378,
    28/21 = 28 × 18/21 × 18 = 504/378
  3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
    2/54 = 2 × 7/54 × 7 = 14/378
  4. Subtract the two like fractions:
    504/378 - 14/378 = 504 - 14/378 = 490/378
  5. After reducing the fraction, the answer is 35/27
  6. In mixed form: 18/27

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