Answers

Add 40/21 and 28/81

1^st number: 1 19/21, 2^nd number: 28/81

40/21 + 28/81 is 1276/567.

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,
   40/21 = 40 × 27/21 × 27 = 1080/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   28/81 = 28 × 7/81 × 7 = 196/567
4. Add the two like fractions:
   1080/567 + 196/567 = 1080 + 196/567 = 1276/567
5. So, 40/21 + 28/81 = 1276/567
   In mixed form: 2142/567

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