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Subtract 3/25 from 81/30

1st number: 2 21/30, 2nd number: 3/25

81/30 - 3/25 is 129/50.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 25 is 150

    Next, find the equivalent fraction of both fractional numbers with denominator 150
  2. For the 1st fraction, since 30 × 5 = 150,
    81/30 = 81 × 5/30 × 5 = 405/150
  3. Likewise, for the 2nd fraction, since 25 × 6 = 150,
    3/25 = 3 × 6/25 × 6 = 18/150
  4. Subtract the two like fractions:
    405/150 - 18/150 = 405 - 18/150 = 387/150
  5. After reducing the fraction, the answer is 129/50
  6. In mixed form: 229/50

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