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Subtract 40/21 from 35/24

1st number: 1 11/24, 2nd number: 1 19/21

35/24 - 40/21 is -25/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 24 and 21 is 168
  2. For the 1st fraction, since 24 × 7 = 168,
    35/24 = 35 × 7/24 × 7 = 245/168
  3. Likewise, for the 2nd fraction, since 21 × 8 = 168,
    40/21 = 40 × 8/21 × 8 = 320/168
  4. Subtract the two fractions:
    245/168 - 320/168 = 245 - 320/168 = -75/168
  5. After reducing the fraction, the answer is -25/56

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