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Add 72/98 and 4/81

72/98 + 4/81 is 3112/3969.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 98 and 81 is 7938
  2. For the 1st fraction, since 98 × 81 = 7938,
    72/98 = 72 × 81/98 × 81 = 5832/7938
  3. Likewise, for the 2nd fraction, since 81 × 98 = 7938,
    4/81 = 4 × 98/81 × 98 = 392/7938
  4. Add the two fractions:
    5832/7938 + 392/7938 = 5832 + 392/7938 = 6224/7938
  5. After reducing the fraction, the answer is 3112/3969

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