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Subtract 28/9 from 21/2

1st number: 10 1/2, 2nd number: 3 1/9

21/2 - 28/9 is 133/18.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 2 and 9 is 18

    Next, find the equivalent fraction of both fractional numbers with denominator 18
  2. For the 1st fraction, since 2 × 9 = 18,
    21/2 = 21 × 9/2 × 9 = 189/18
  3. Likewise, for the 2nd fraction, since 9 × 2 = 18,
    28/9 = 28 × 2/9 × 2 = 56/18
  4. Subtract the two like fractions:
    189/18 - 56/18 = 189 - 56/18 = 133/18
  5. In mixed form: 77/18

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