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Subtract 81/40 from 30/24

1st number: 1 6/24, 2nd number: 2 1/40

30/24 - 81/40 is -31/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 40 is 120
  2. For the 1st fraction, since 24 × 5 = 120,
    30/24 = 30 × 5/24 × 5 = 150/120
  3. Likewise, for the 2nd fraction, since 40 × 3 = 120,
    81/40 = 81 × 3/40 × 3 = 243/120
  4. Subtract the two fractions:
    150/120 - 243/120 = 150 - 243/120 = -93/120
  5. After reducing the fraction, the answer is -31/40

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