Answers

Add 81/42 and 49/54

1^st number: 1 39/42, 2^nd number: 49/54

81/42 + 49/54 is 536/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 42 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 42 × 9 = 378,
   81/42 = 81 × 9/42 × 9 = 729/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   49/54 = 49 × 7/54 × 7 = 343/378
4. Add the two like fractions:
   729/378 + 343/378 = 729 + 343/378 = 1072/378
5. 1072/378 simplified gives 536/189
6. So, 81/42 + 49/54 = 536/189
   In mixed form: 2158/189

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