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Subtract 15/8 from 35/20

1st number: 1 15/20, 2nd number: 1 7/8

35/20 - 15/8 is -1/8.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 8 is 40
  2. For the 1st fraction, since 20 × 2 = 40,
    35/20 = 35 × 2/20 × 2 = 70/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    15/8 = 15 × 5/8 × 5 = 75/40
  4. Subtract the two fractions:
    70/40 - 75/40 = 70 - 75/40 = -5/40
  5. After reducing the fraction, the answer is -1/8

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