Answers

Add 8/81 and 81/80

1^st number: 8/81, 2^nd number: 1 1/80

8/81 + 81/80 is 7201/6480.

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,
   8/81 = 8 × 80/81 × 80 = 640/6480
3. Likewise, for the 2nd fraction, since 80 × 81 = 6480,
   81/80 = 81 × 81/80 × 81 = 6561/6480
4. Add the two like fractions:
   640/6480 + 6561/6480 = 640 + 6561/6480 = 7201/6480
5. So, 8/81 + 81/80 = 7201/6480
   In mixed form: 1721/6480

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