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Add 21/70 and 14/81

21/70 + 14/81 is 383/810.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 70 and 81 is 5670

    Next, find the equivalent fraction of both fractional numbers with denominator 5670
  2. For the 1st fraction, since 70 × 81 = 5670,
    21/70 = 21 × 81/70 × 81 = 1701/5670
  3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
    14/81 = 14 × 70/81 × 70 = 980/5670
  4. Add the two like fractions:
    1701/5670 + 980/5670 = 1701 + 980/5670 = 2681/5670
  5. 2681/5670 simplified gives 383/810
  6. So, 21/70 + 14/81 = 383/810

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