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Subtract 48/81 from 90/30

1st number: 3 0/30, 2nd number: 48/81

90/30 - 48/81 is 65/27.

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,
    48/81 = 48 × 10/81 × 10 = 480/810
  4. Subtract the two fractions:
    2430/810 - 480/810 = 2430 - 480/810 = 1950/810
  5. After reducing the fraction, the answer is 65/27
  6. In mixed form: 211/27

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