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Subtract 45/30 from 15/12

1st number: 1 3/12, 2nd number: 1 15/30

15/12 - 45/30 is -1/4.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 30 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 12 × 5 = 60,
    15/12 = 15 × 5/12 × 5 = 75/60
  3. Likewise, for the 2nd fraction, since 30 × 2 = 60,
    45/30 = 45 × 2/30 × 2 = 90/60
  4. Subtract the two like fractions:
    75/60 - 90/60 = 75 - 90/60 = -15/60
  5. After reducing the fraction, the answer is -1/4

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