Answers

Add 1/81 and 63/80

1/81 + 63/80 is 5183/6480.

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,
   1/81 = 1 × 80/81 × 80 = 80/6480
3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
   63/80 = 63 × 81/80 × 81 = 5103/6480
4. Add the two like fractions:
   80/6480 + 5103/6480 = 80 + 5103/6480 = 5183/6480
5. So, 1/81 + 63/80 = 5183/6480

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