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Subtract 15/54 from 42/5

1st number: 8 2/5, 2nd number: 15/54

42/5 - 15/54 is 731/90.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 5 and 54 is 270

    Next, find the equivalent fraction of both fractional numbers with denominator 270
  2. For the 1st fraction, since 5 × 54 = 270,
    42/5 = 42 × 54/5 × 54 = 2268/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    15/54 = 15 × 5/54 × 5 = 75/270
  4. Subtract the two like fractions:
    2268/270 - 75/270 = 2268 - 75/270 = 2193/270
  5. After reducing the fraction, the answer is 731/90
  6. In mixed form: 811/90

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