Answers

Add 81/80 and 1/81

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

81/80 + 1/81 is 6641/6480.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 80 and 81 is 6480
   
   Next, find the equivalent fraction of both fractional numbers with denominator 6480
2. For the 1st fraction, since 80 × 81 = 6480,
   81/80 = 81 × 81/80 × 81 = 6561/6480
3. Likewise, for the 2nd fraction, since 81 × 80 = 6480,
   1/81 = 1 × 80/81 × 80 = 80/6480
4. Add the two like fractions:
   6561/6480 + 80/6480 = 6561 + 80/6480 = 6641/6480
5. So, 81/80 + 1/81 = 6641/6480
   In mixed form: 1161/6480

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