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Add 5/7 and 15/81

5/7 + 15/81 is 170/189.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 7 and 81 is 567

    Next, find the equivalent fraction of both fractional numbers with denominator 567
  2. For the 1st fraction, since 7 × 81 = 567,
    5/7 = 5 × 81/7 × 81 = 405/567
  3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
    15/81 = 15 × 7/81 × 7 = 105/567
  4. Add the two like fractions:
    405/567 + 105/567 = 405 + 105/567 = 510/567
  5. 510/567 simplified gives 170/189
  6. So, 5/7 + 15/81 = 170/189

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