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Subtract 10/8 from 4/5

1st number: 4/5, 2nd number: 1 2/8

4/5 - 10/8 is -9/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 8 is 40
  2. For the 1st fraction, since 5 × 8 = 40,
    4/5 = 4 × 8/5 × 8 = 32/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    10/8 = 10 × 5/8 × 5 = 50/40
  4. Subtract the two fractions:
    32/40 - 50/40 = 32 - 50/40 = -18/40
  5. After reducing the fraction, the answer is -9/20

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