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Subtract 9/8 from 20/12

1st number: 1 8/12, 2nd number: 1 1/8

20/12 - 9/8 is 13/24.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 12 and 8 is 24
  2. For the 1st fraction, since 12 × 2 = 24,
    20/12 = 20 × 2/12 × 2 = 40/24
  3. Likewise, for the 2nd fraction, since 8 × 3 = 24,
    9/8 = 9 × 3/8 × 3 = 27/24
  4. Subtract the two fractions:
    40/24 - 27/24 = 40 - 27/24 = 13/24

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