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Add 70/20 and 3/81

1st number: 3 10/20, 2nd number: 3/81

70/20 + 3/81 is 191/54.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 20 and 81 is 1620

    Next, find the equivalent fraction of both fractional numbers with denominator 1620
  2. For the 1st fraction, since 20 × 81 = 1620,
    70/20 = 70 × 81/20 × 81 = 5670/1620
  3. Likewise, for the 2nd fraction, since 81 × 20 = 1620,
    3/81 = 3 × 20/81 × 20 = 60/1620
  4. Add the two like fractions:
    5670/1620 + 60/1620 = 5670 + 60/1620 = 5730/1620
  5. 5730/1620 simplified gives 191/54
  6. So, 70/20 + 3/81 = 191/54
    In mixed form: 329/54

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