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Subtract 63/12 from 21/5

1st number: 4 1/5, 2nd number: 5 3/12

21/5 - 63/12 is -21/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 12 is 60

    Next, find the equivalent fraction of both fractional numbers with denominator 60
  2. For the 1st fraction, since 5 × 12 = 60,
    21/5 = 21 × 12/5 × 12 = 252/60
  3. Likewise, for the 2nd fraction, since 12 × 5 = 60,
    63/12 = 63 × 5/12 × 5 = 315/60
  4. Subtract the two like fractions:
    252/60 - 315/60 = 252 - 315/60 = -63/60
  5. After reducing the fraction, the answer is -21/20

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