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Subtract 28/24 from 40/70

1st number: 40/70, 2nd number: 1 4/24

40/70 - 28/24 is -25/42.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 24 is 840
  2. For the 1st fraction, since 70 × 12 = 840,
    40/70 = 40 × 12/70 × 12 = 480/840
  3. Likewise, for the 2nd fraction, since 24 × 35 = 840,
    28/24 = 28 × 35/24 × 35 = 980/840
  4. Subtract the two fractions:
    480/840 - 980/840 = 480 - 980/840 = -500/840
  5. After reducing the fraction, the answer is -25/42

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