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Add 18/84 and 20/81

18/84 + 20/81 is 523/1134.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 84 and 81 is 2268

    Next, find the equivalent fraction of both fractional numbers with denominator 2268
  2. For the 1st fraction, since 84 × 27 = 2268,
    18/84 = 18 × 27/84 × 27 = 486/2268
  3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
    20/81 = 20 × 28/81 × 28 = 560/2268
  4. Add the two like fractions:
    486/2268 + 560/2268 = 486 + 560/2268 = 1046/2268
  5. 1046/2268 simplified gives 523/1134
  6. So, 18/84 + 20/81 = 523/1134

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