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Subtract 1/15 from 81/2

1st number: 40 1/2, 2nd number: 1/15

81/2 - 1/15 is 1213/30.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 15 is 30

    Next, find the equivalent fraction of both fractional numbers with denominator 30
  2. For the 1st fraction, since 2 × 15 = 30,
    81/2 = 81 × 15/2 × 15 = 1215/30
  3. Likewise, for the 2nd fraction, since 15 × 2 = 30,
    1/15 = 1 × 2/15 × 2 = 2/30
  4. Subtract the two like fractions:
    1215/30 - 2/30 = 1215 - 2/30 = 1213/30
  5. In mixed form: 4013/30

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