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Subtract 54/8 from 28/5

1st number: 5 3/5, 2nd number: 6 6/8

28/5 - 54/8 is -23/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 8 is 40

    Next, find the equivalent fraction of both fractional numbers with denominator 40
  2. For the 1st fraction, since 5 × 8 = 40,
    28/5 = 28 × 8/5 × 8 = 224/40
  3. Likewise, for the 2nd fraction, since 8 × 5 = 40,
    54/8 = 54 × 5/8 × 5 = 270/40
  4. Subtract the two like fractions:
    224/40 - 270/40 = 224 - 270/40 = -46/40
  5. After reducing the fraction, the answer is -23/20

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