Answers

Add 30/21 and 80/81

1^st number: 1 9/21, 2^nd number: 80/81

30/21 + 80/81 is 1370/567.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 21 × 27 = 567,
   30/21 = 30 × 27/21 × 27 = 810/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   80/81 = 80 × 7/81 × 7 = 560/567
4. Add the two like fractions:
   810/567 + 560/567 = 810 + 560/567 = 1370/567
5. So, 30/21 + 80/81 = 1370/567
   In mixed form: 2236/567

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