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Subtract 12/9 from 90/75

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

90/75 - 12/9 is -2/15.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 9 is 225

    Next, find the equivalent fraction of both fractional numbers with denominator 225
  2. For the 1st fraction, since 75 × 3 = 225,
    90/75 = 90 × 3/75 × 3 = 270/225
  3. Likewise, for the 2nd fraction, since 9 × 25 = 225,
    12/9 = 12 × 25/9 × 25 = 300/225
  4. Subtract the two like fractions:
    270/225 - 300/225 = 270 - 300/225 = -30/225
  5. After reducing the fraction, the answer is -2/15

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