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Subtract 28/20 from 24/27

1st number: 24/27, 2nd number: 1 8/20

24/27 - 28/20 is -23/45.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 27 and 20 is 540

    Next, find the equivalent fraction of both fractional numbers with denominator 540
  2. For the 1st fraction, since 27 × 20 = 540,
    24/27 = 24 × 20/27 × 20 = 480/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    28/20 = 28 × 27/20 × 27 = 756/540
  4. Subtract the two like fractions:
    480/540 - 756/540 = 480 - 756/540 = -276/540
  5. After reducing the fraction, the answer is -23/45

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