Answers

Add 80/42 and 28/81

1^st number: 1 38/42, 2^nd number: 28/81

80/42 + 28/81 is 1276/567.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 81 is 1134
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1134
2. For the 1st fraction, since 42 × 27 = 1134,
   80/42 = 80 × 27/42 × 27 = 2160/1134
3. Likewise, for the 2nd fraction, since 81 × 14 = 1134,
   28/81 = 28 × 14/81 × 14 = 392/1134
4. Add the two like fractions:
   2160/1134 + 392/1134 = 2160 + 392/1134 = 2552/1134
5. 2552/1134 simplified gives 1276/567
6. So, 80/42 + 28/81 = 1276/567
   In mixed form: 2142/567

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