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Subtract 21/63 from 12/5

1st number: 2 2/5, 2nd number: 21/63

12/5 - 21/63 is 31/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 63 is 315

    Next, find the equivalent fraction of both fractional numbers with denominator 315
  2. For the 1st fraction, since 5 × 63 = 315,
    12/5 = 12 × 63/5 × 63 = 756/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    21/63 = 21 × 5/63 × 5 = 105/315
  4. Subtract the two like fractions:
    756/315 - 105/315 = 756 - 105/315 = 651/315
  5. After reducing the fraction, the answer is 31/15
  6. In mixed form: 21/15

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