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Subtract 5/18 from 28/15

1st number: 1 13/15, 2nd number: 5/18

28/15 - 5/18 is 143/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 15 and 18 is 90

    Next, find the equivalent fraction of both fractional numbers with denominator 90
  2. For the 1st fraction, since 15 × 6 = 90,
    28/15 = 28 × 6/15 × 6 = 168/90
  3. Likewise, for the 2nd fraction, since 18 × 5 = 90,
    5/18 = 5 × 5/18 × 5 = 25/90
  4. Subtract the two like fractions:
    168/90 - 25/90 = 168 - 25/90 = 143/90
  5. In mixed form: 153/90

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