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Subtract 27/7 from 81/4

1st number: 20 1/4, 2nd number: 3 6/7

81/4 - 27/7 is 459/28.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 7 is 28
  2. For the 1st fraction, since 4 × 7 = 28,
    81/4 = 81 × 7/4 × 7 = 567/28
  3. Likewise, for the 2nd fraction, since 7 × 4 = 28,
    27/7 = 27 × 4/7 × 4 = 108/28
  4. Subtract the two fractions:
    567/28 - 108/28 = 567 - 108/28 = 459/28
  5. In mixed form: 1611/28

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