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Subtract 21/4 from 54/10

1st number: 5 4/10, 2nd number: 5 1/4

54/10 - 21/4 is 3/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 4 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 10 × 2 = 20,
    54/10 = 54 × 2/10 × 2 = 108/20
  3. Likewise, for the 2nd fraction, since 4 × 5 = 20,
    21/4 = 21 × 5/4 × 5 = 105/20
  4. Subtract the two like fractions:
    108/20 - 105/20 = 108 - 105/20 = 3/20

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