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Subtract 12/63 from 9/15

9/15 - 12/63 is 43/105.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 63 is 315
  2. For the 1st fraction, since 15 × 21 = 315,
    9/15 = 9 × 21/15 × 21 = 189/315
  3. Likewise, for the 2nd fraction, since 63 × 5 = 315,
    12/63 = 12 × 5/63 × 5 = 60/315
  4. Subtract the two fractions:
    189/315 - 60/315 = 189 - 60/315 = 129/315
  5. After reducing the fraction, the answer is 43/105

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