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Subtract 40/27 from 81/30

1st number: 2 21/30, 2nd number: 1 13/27

81/30 - 40/27 is 329/270.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 30 and 27 is 270
  2. For the 1st fraction, since 30 × 9 = 270,
    81/30 = 81 × 9/30 × 9 = 729/270
  3. Likewise, for the 2nd fraction, since 27 × 10 = 270,
    40/27 = 40 × 10/27 × 10 = 400/270
  4. Subtract the two fractions:
    729/270 - 400/270 = 729 - 400/270 = 329/270
  5. In mixed form: 159/270

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