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Subtract 10/8 from 18/80

1st number: 18/80, 2nd number: 1 2/8

18/80 - 10/8 is -41/40.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 80 and 8 is 80

    Next, find the equivalent fraction of both fractional numbers with denominator 80
  2. For the 1st fraction, since 80 × 1 = 80,
    18/80 = 18 × 1/80 × 1 = 18/80
  3. Likewise, for the 2nd fraction, since 8 × 10 = 80,
    10/8 = 10 × 10/8 × 10 = 100/80
  4. Subtract the two like fractions:
    18/80 - 100/80 = 18 - 100/80 = -82/80
  5. After reducing the fraction, the answer is -41/40

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