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Subtract 48/81 from 90/15

1st number: 6 0/15, 2nd number: 48/81

90/15 - 48/81 is 146/27.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 81 is 405
  2. For the 1st fraction, since 15 × 27 = 405,
    90/15 = 90 × 27/15 × 27 = 2430/405
  3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
    48/81 = 48 × 5/81 × 5 = 240/405
  4. Subtract the two fractions:
    2430/405 - 240/405 = 2430 - 240/405 = 2190/405
  5. After reducing the fraction, the answer is 146/27
  6. In mixed form: 511/27

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