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Add 81/36 and 20/7

1st number: 2 9/36, 2nd number: 2 6/7

81/36 + 20/7 is 143/28.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 36 and 7 is 252

    Next, find the equivalent fraction of both fractional numbers with denominator 252
  2. For the 1st fraction, since 36 × 7 = 252,
    81/36 = 81 × 7/36 × 7 = 567/252
  3. Likewise, for the 2nd fraction, since 7 × 36 = 252,
    20/7 = 20 × 36/7 × 36 = 720/252
  4. Add the two like fractions:
    567/252 + 720/252 = 567 + 720/252 = 1287/252
  5. 1287/252 simplified gives 143/28
  6. So, 81/36 + 20/7 = 143/28
    In mixed form: 53/28

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