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Subtract 21/20 from 2/27

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

2/27 - 21/20 is -527/540.

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,
    2/27 = 2 × 20/27 × 20 = 40/540
  3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
    21/20 = 21 × 27/20 × 27 = 567/540
  4. Subtract the two like fractions:
    40/540 - 567/540 = 40 - 567/540 = -527/540

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