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Subtract 18/7 from 81/8

1st number: 10 1/8, 2nd number: 2 4/7

81/8 - 18/7 is 423/56.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 8 and 7 is 56
  2. For the 1st fraction, since 8 × 7 = 56,
    81/8 = 81 × 7/8 × 7 = 567/56
  3. Likewise, for the 2nd fraction, since 7 × 8 = 56,
    18/7 = 18 × 8/7 × 8 = 144/56
  4. Subtract the two fractions:
    567/56 - 144/56 = 567 - 144/56 = 423/56
  5. In mixed form: 731/56

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