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Subtract 5/8 from 4/10

4/10 - 5/8 is -9/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 8 is 40
  2. For the 1st fraction, since 10 × 4 = 40,
    4/10 = 4 × 4/10 × 4 = 16/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    5/8 = 5 × 5/8 × 5 = 25/40
  4. Subtract the two fractions:
    16/40 - 25/40 = 16 - 25/40 = -9/40

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