Answers

Add 42/27 and 80/42

1^st number: 1 15/27, 2^nd number: 1 38/42

42/27 + 80/42 is 218/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 27 and 42 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 27 × 14 = 378,
   42/27 = 42 × 14/27 × 14 = 588/378
3. Likewise, for the 2nd fraction, since 42 × 9 = 378,
   80/42 = 80 × 9/42 × 9 = 720/378
4. Add the two like fractions:
   588/378 + 720/378 = 588 + 720/378 = 1308/378
5. 1308/378 simplified gives 218/63
6. So, 42/27 + 80/42 = 218/63
   In mixed form: 329/63

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