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Add 28/70 and 63/81

28/70 + 63/81 is 53/45.

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,
    28/70 = 28 × 81/70 × 81 = 2268/5670
  3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
    63/81 = 63 × 70/81 × 70 = 4410/5670
  4. Add the two like fractions:
    2268/5670 + 4410/5670 = 2268 + 4410/5670 = 6678/5670
  5. 6678/5670 simplified gives 53/45
  6. So, 28/70 + 63/81 = 53/45
    In mixed form: 18/45

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