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Subtract 81/30 from 12/10

1st number: 1 2/10, 2nd number: 2 21/30

12/10 - 81/30 is -3/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 30 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 10 × 3 = 30,
    12/10 = 12 × 3/10 × 3 = 36/30
  3. Likewise, for the 2nd fraction, since 30 × 1 = 30,
    81/30 = 81 × 1/30 × 1 = 81/30
  4. Subtract the two like fractions:
    36/30 - 81/30 = 36 - 81/30 = -45/30
  5. After reducing the fraction, the answer is -3/2

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