Answers

Add 27/40 and 1/81

27/40 + 1/81 is 2227/3240.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 40 and 81 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 40 × 81 = 3240,
   27/40 = 27 × 81/40 × 81 = 2187/3240
3. Likewise, for the 2nd fraction, since 81 × 40 = 3240,
   1/81 = 1 × 40/81 × 40 = 40/3240
4. Add the two like fractions:
   2187/3240 + 40/3240 = 2187 + 40/3240 = 2227/3240
5. So, 27/40 + 1/81 = 2227/3240

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