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Subtract 5/20 from 54/45

1st number: 1 9/45, 2nd number: 5/20

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

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 45 and 20 is 180

    Next, find the equivalent fraction of both fractional numbers with denominator 180
  2. For the 1st fraction, since 45 × 4 = 180,
    54/45 = 54 × 4/45 × 4 = 216/180
  3. Likewise, for the 2nd fraction, since 20 × 9 = 180,
    5/20 = 5 × 9/20 × 9 = 45/180
  4. Subtract the two like fractions:
    216/180 - 45/180 = 216 - 45/180 = 171/180
  5. After reducing the fraction, the answer is 19/20

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