Answers

Add 40/81 and 27/80

40/81 + 27/80 is 5387/6480.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 80 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 81 × 80 = 6480,
   40/81 = 40 × 80/81 × 80 = 3200/6480
3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
   27/80 = 27 × 81/80 × 81 = 2187/6480
4. Add the two like fractions:
   3200/6480 + 2187/6480 = 3200 + 2187/6480 = 5387/6480
5. So, 40/81 + 27/80 = 5387/6480

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