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Subtract 12/10 from 27/28

1st number: 27/28, 2nd number: 1 2/10

27/28 - 12/10 is -33/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 10 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    27/28 = 27 × 5/28 × 5 = 135/140
  3. Likewise, for the 2nd fraction, since 10 × 14 = 140,
    12/10 = 12 × 14/10 × 14 = 168/140
  4. Subtract the two like fractions:
    135/140 - 168/140 = 135 - 168/140 = -33/140

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