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Subtract 12/9 from 9/28

1st number: 9/28, 2nd number: 1 3/9

9/28 - 12/9 is -85/84.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 9 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 28 × 9 = 252,
    9/28 = 9 × 9/28 × 9 = 81/252
  3. Likewise, for the 2nd fraction, since 9 × 28 = 252,
    12/9 = 12 × 28/9 × 28 = 336/252
  4. Subtract the two like fractions:
    81/252 - 336/252 = 81 - 336/252 = -255/252
  5. After reducing the fraction, the answer is -85/84

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