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Subtract 20/63 from 15/12

1st number: 1 3/12, 2nd number: 20/63

15/12 - 20/63 is 235/252.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 63 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 12 × 21 = 252,
    15/12 = 15 × 21/12 × 21 = 315/252
  3. Likewise, for the 2nd fraction, since 63 × 4 = 252,
    20/63 = 20 × 4/63 × 4 = 80/252
  4. Subtract the two like fractions:
    315/252 - 80/252 = 315 - 80/252 = 235/252

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