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Subtract 20/27 from 10/28

10/28 - 20/27 is -145/378.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 28 and 27 is 756

    Next, find the equivalent fraction of both fractional numbers with denominator 756
  2. For the 1st fraction, since 28 × 27 = 756,
    10/28 = 10 × 27/28 × 27 = 270/756
  3. Likewise, for the 2nd fraction, since 27 × 28 = 756,
    20/27 = 20 × 28/27 × 28 = 560/756
  4. Subtract the two like fractions:
    270/756 - 560/756 = 270 - 560/756 = -290/756
  5. After reducing the fraction, the answer is -145/378

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