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Subtract 7/8 from 3/40

3/40 - 7/8 is -4/5.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 8 is 40
  2. For the 1st fraction, since 40 × 1 = 40,
    3/40 = 3 × 1/40 × 1 = 3/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    7/8 = 7 × 5/8 × 5 = 35/40
  4. Subtract the two fractions:
    3/40 - 35/40 = 3 - 35/40 = -32/40
  5. After reducing the fraction, the answer is -4/5

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