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Add 1/40 and 7/81

1/40 + 7/81 is 361/3240.

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,
    1/40 = 1 × 81/40 × 81 = 81/3240
  3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
    7/81 = 7 × 40/81 × 40 = 280/3240
  4. Add the two fractions:
    81/3240 + 280/3240 = 81 + 280/3240 = 361/3240

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