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Subtract 18/10 from 9/12

1st number: 9/12, 2nd number: 1 8/10

9/12 - 18/10 is -21/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 10 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 12 × 5 = 60,
    9/12 = 9 × 5/12 × 5 = 45/60
  3. Likewise, for the 2nd fraction, since 10 × 6 = 60,
    18/10 = 18 × 6/10 × 6 = 108/60
  4. Subtract the two like fractions:
    45/60 - 108/60 = 45 - 108/60 = -63/60
  5. After reducing the fraction, the answer is -21/20

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