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Subtract 42/24 from 20/35

1st number: 20/35, 2nd number: 1 18/24

20/35 - 42/24 is -33/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 35 and 24 is 840
  2. For the 1st fraction, since 35 × 24 = 840,
    20/35 = 20 × 24/35 × 24 = 480/840
  3. Likewise, for the 2nd fraction, since 24 × 35 = 840,
    42/24 = 42 × 35/24 × 35 = 1470/840
  4. Subtract the two fractions:
    480/840 - 1470/840 = 480 - 1470/840 = -990/840
  5. After reducing the fraction, the answer is -33/28

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