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Add 20/81 and 21/49

20/81 + 21/49 is 383/567.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 81 and 49 is 3969

    Next, find the equivalent fraction of both fractional numbers with denominator 3969
  2. For the 1st fraction, since 81 × 49 = 3969,
    20/81 = 20 × 49/81 × 49 = 980/3969
  3. Likewise, for the 2nd fraction, since 49 × 81 = 3969,
    21/49 = 21 × 81/49 × 81 = 1701/3969
  4. Add the two like fractions:
    980/3969 + 1701/3969 = 980 + 1701/3969 = 2681/3969
  5. 2681/3969 simplified gives 383/567
  6. So, 20/81 + 21/49 = 383/567

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