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Subtract 21/9 from 15/75

1st number: 15/75, 2nd number: 2 3/9

15/75 - 21/9 is -32/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 9 is 225
  2. For the 1st fraction, since 75 × 3 = 225,
    15/75 = 15 × 3/75 × 3 = 45/225
  3. Likewise, for the 2nd fraction, since 9 × 25 = 225,
    21/9 = 21 × 25/9 × 25 = 525/225
  4. Subtract the two fractions:
    45/225 - 525/225 = 45 - 525/225 = -480/225
  5. After reducing the fraction, the answer is -32/15

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