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Subtract 8/5 from 81/4

1st number: 20 1/4, 2nd number: 1 3/5

81/4 - 8/5 is 373/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 4 × 5 = 20,
    81/4 = 81 × 5/4 × 5 = 405/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    8/5 = 8 × 4/5 × 4 = 32/20
  4. Subtract the two like fractions:
    405/20 - 32/20 = 405 - 32/20 = 373/20
  5. In mixed form: 1813/20

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