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Subtract 6/5 from 21/4

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

21/4 - 6/5 is 81/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 4 and 5 is 20
  2. For the 1st fraction, since 4 × 5 = 20,
    21/4 = 21 × 5/4 × 5 = 105/20
  3. Likewise, for the 2nd fraction, since 5 × 4 = 20,
    6/5 = 6 × 4/5 × 4 = 24/20
  4. Subtract the two fractions:
    105/20 - 24/20 = 105 - 24/20 = 81/20
  5. In mixed form: 41/20

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