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Subtract 28/20 from 15/10

1st number: 1 5/10, 2nd number: 1 8/20

15/10 - 28/20 is 1/10.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 10 and 20 is 20
  2. For the 1st fraction, since 10 × 2 = 20,
    15/10 = 15 × 2/10 × 2 = 30/20
  3. Likewise, for the 2nd fraction, since 20 × 1 = 20,
    28/20 = 28 × 1/20 × 1 = 28/20
  4. Subtract the two fractions:
    30/20 - 28/20 = 30 - 28/20 = 2/20
  5. After reducing the fraction, the answer is 1/10

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