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Subtract 1/10 from 2/81

2/81 - 1/10 is -61/810.

Steps for subtracting fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 10 is 810

    Next, find the equivalent fraction of both fractional numbers with denominator 810
  2. For the 1st fraction, since 81 × 10 = 810,
    2/81 = 2 × 10/81 × 10 = 20/810
  3. Likewise, for the 2nd fraction, since 10 × 81 = 810,
    1/10 = 1 × 81/10 × 81 = 81/810
  4. Subtract the two like fractions:
    20/810 - 81/810 = 20 - 81/810 = -61/810

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