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Subtract 21/15 from 12/15

1st number: 12/15, 2nd number: 1 6/15

12/15 - 21/15 is -3/5.

Steps for subtracting fractions

  1. Subtract the two fractions:
    12/15 - 21/15 = 12 - 21/15 = -9/15
  2. After reducing the fraction, the answer is -3/5

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