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Add 5/10 and 28/81

5/10 + 28/81 is 137/162.

Steps for adding fractions

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

    Next, find the equivalent fraction of both fractional numbers with denominator 810
  2. For the 1st fraction, since 10 × 81 = 810,
    5/10 = 5 × 81/10 × 81 = 405/810
  3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
    28/81 = 28 × 10/81 × 10 = 280/810
  4. Add the two like fractions:
    405/810 + 280/810 = 405 + 280/810 = 685/810
  5. 685/810 simplified gives 137/162
  6. So, 5/10 + 28/81 = 137/162

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