Answers

Add 80/7 and 18/81

1^st number: 11 3/7, 2^nd number: 18/81

80/7 + 18/81 is 734/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 7 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 7 × 81 = 567,
   80/7 = 80 × 81/7 × 81 = 6480/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   18/81 = 18 × 7/81 × 7 = 126/567
4. Add the two like fractions:
   6480/567 + 126/567 = 6480 + 126/567 = 6606/567
5. 6606/567 simplified gives 734/63
6. So, 80/7 + 18/81 = 734/63
   In mixed form: 1141/63

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