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Subtract 16/5 from 21/2

1st number: 10 1/2, 2nd number: 3 1/5

21/2 - 16/5 is 73/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 5 is 10

    Next, find the equivalent fraction of both fractional numbers with denominator 10
  2. For the 1st fraction, since 2 × 5 = 10,
    21/2 = 21 × 5/2 × 5 = 105/10
  3. Likewise, for the 2nd fraction, since 5 × 2 = 10,
    16/5 = 16 × 2/5 × 2 = 32/10
  4. Subtract the two like fractions:
    105/10 - 32/10 = 105 - 32/10 = 73/10
  5. In mixed form: 73/10

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