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Subtract 7/20 from 28/10

1st number: 2 8/10, 2nd number: 7/20

28/10 - 7/20 is 49/20.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 20 is 20

    Next, find the equivalent fraction of both fractional numbers with denominator 20
  2. For the 1st fraction, since 10 × 2 = 20,
    28/10 = 28 × 2/10 × 2 = 56/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    7/20 = 7 × 1/20 × 1 = 7/20
  4. Subtract the two like fractions:
    56/20 - 7/20 = 56 - 7/20 = 49/20
  5. In mixed form: 29/20

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