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Subtract 9/28 from 81/2

1st number: 40 1/2, 2nd number: 9/28

81/2 - 9/28 is 1125/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 28 is 28

    Next, find the equivalent fraction of both fractional numbers with denominator 28
  2. For the 1st fraction, since 2 × 14 = 28,
    81/2 = 81 × 14/2 × 14 = 1134/28
  3. Likewise, for the 2nd fraction, since 28 × 1 = 28,
    9/28 = 9 × 1/28 × 1 = 9/28
  4. Subtract the two like fractions:
    1134/28 - 9/28 = 1134 - 9/28 = 1125/28
  5. In mixed form: 405/28

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