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Subtract 49/20 from 15/28

1st number: 15/28, 2nd number: 2 9/20

15/28 - 49/20 is -67/35.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 20 is 140

    Next, find the equivalent fraction of both fractional numbers with denominator 140
  2. For the 1st fraction, since 28 × 5 = 140,
    15/28 = 15 × 5/28 × 5 = 75/140
  3. Likewise, for the 2nd fraction, since 20 × 7 = 140,
    49/20 = 49 × 7/20 × 7 = 343/140
  4. Subtract the two like fractions:
    75/140 - 343/140 = 75 - 343/140 = -268/140
  5. After reducing the fraction, the answer is -67/35

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