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Add 5/70 and 12/81

5/70 + 12/81 is 83/378.

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,
    5/70 = 5 × 81/70 × 81 = 405/5670
  3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
    12/81 = 12 × 70/81 × 70 = 840/5670
  4. Add the two like fractions:
    405/5670 + 840/5670 = 405 + 840/5670 = 1245/5670
  5. 1245/5670 simplified gives 83/378
  6. So, 5/70 + 12/81 = 83/378

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