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Subtract 24/81 from 90/30

1st number: 3 0/30, 2nd number: 24/81

90/30 - 24/81 is 73/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 81 is 810
  2. For the 1st fraction, since 30 × 27 = 810,
    90/30 = 90 × 27/30 × 27 = 2430/810
  3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
    24/81 = 24 × 10/81 × 10 = 240/810
  4. Subtract the two fractions:
    2430/810 - 240/810 = 2430 - 240/810 = 2190/810
  5. After reducing the fraction, the answer is 73/27
  6. In mixed form: 219/27

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