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Add 20/90 and 3/81

20/90 + 3/81 is 7/27.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 90 and 81 is 810

    Next, find the equivalent fraction of both fractional numbers with denominator 810
  2. For the 1st fraction, since 90 × 9 = 810,
    20/90 = 20 × 9/90 × 9 = 180/810
  3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
    3/81 = 3 × 10/81 × 10 = 30/810
  4. Add the two like fractions:
    180/810 + 30/810 = 180 + 30/810 = 210/810
  5. 210/810 simplified gives 7/27
  6. So, 20/90 + 3/81 = 7/27

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