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Subtract 35/7 from 20/40

1st number: 20/40, 2nd number: 5 0/7

20/40 - 35/7 is -9/2.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 7 is 280
  2. For the 1st fraction, since 40 × 7 = 280,
    20/40 = 20 × 7/40 × 7 = 140/280
  3. Likewise, for the 2nd fraction, since 7 × 40 = 280,
    35/7 = 35 × 40/7 × 40 = 1400/280
  4. Subtract the two fractions:
    140/280 - 1400/280 = 140 - 1400/280 = -1260/280
  5. After reducing the fraction, the answer is -9/2

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