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Subtract 90/12 from 90/75

1st number: 1 15/75, 2nd number: 7 6/12

90/75 - 90/12 is -63/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 12 is 300
  2. For the 1st fraction, since 75 × 4 = 300,
    90/75 = 90 × 4/75 × 4 = 360/300
  3. Likewise, for the 2nd fraction, since 12 × 25 = 300,
    90/12 = 90 × 25/12 × 25 = 2250/300
  4. Subtract the two fractions:
    360/300 - 2250/300 = 360 - 2250/300 = -1890/300
  5. After reducing the fraction, the answer is -63/10

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