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Subtract 75/54 from 21/75

1st number: 21/75, 2nd number: 1 21/54

21/75 - 75/54 is -499/450.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 75 and 54 is 1350
  2. For the 1st fraction, since 75 × 18 = 1350,
    21/75 = 21 × 18/75 × 18 = 378/1350
  3. Likewise, for the 2nd fraction, since 54 × 25 = 1350,
    75/54 = 75 × 25/54 × 25 = 1875/1350
  4. Subtract the two fractions:
    378/1350 - 1875/1350 = 378 - 1875/1350 = -1497/1350
  5. After reducing the fraction, the answer is -499/450

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