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Add 30/40 and 5/81

30/40 + 5/81 is 263/324.

Steps for adding fractions

  1. Find the least common denominator or LCM of the two denominators:
    LCM of 40 and 81 is 3240
  2. For the 1st fraction, since 40 × 81 = 3240,
    30/40 = 30 × 81/40 × 81 = 2430/3240
  3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
    5/81 = 5 × 40/81 × 40 = 200/3240
  4. Add the two fractions:
    2430/3240 + 200/3240 = 2430 + 200/3240 = 2630/3240
  5. After reducing the fraction, the answer is 263/324

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