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Subtract 45/54 from 20/5

1st number: 4 0/5, 2nd number: 45/54

20/5 - 45/54 is 19/6.

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,
    20/5 = 20 × 54/5 × 54 = 1080/270
  3. Likewise, for the 2nd fraction, since 54 × 5 = 270,
    45/54 = 45 × 5/54 × 5 = 225/270
  4. Subtract the two like fractions:
    1080/270 - 225/270 = 1080 - 225/270 = 855/270
  5. After reducing the fraction, the answer is 19/6
  6. In mixed form: 31/6

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