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Subtract 20/25 from 3/28

3/28 - 20/25 is -97/140.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 25 is 700

    Next, find the equivalent fraction of both fractional numbers with denominator 700
  2. For the 1st fraction, since 28 × 25 = 700,
    3/28 = 3 × 25/28 × 25 = 75/700
  3. Likewise, for the 2nd fraction, since 25 × 28 = 700,
    20/25 = 20 × 28/25 × 28 = 560/700
  4. Subtract the two like fractions:
    75/700 - 560/700 = 75 - 560/700 = -485/700
  5. After reducing the fraction, the answer is -97/140

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