Answers

Add 81/18 and 35/42

1^st number: 4 9/18, 2^nd number: 35/42

81/18 + 35/42 is 16/3.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 18 and 42 is 126
   
   Next, find the equivalent fraction of both fractional numbers with denominator 126
2. For the 1st fraction, since 18 × 7 = 126,
   81/18 = 81 × 7/18 × 7 = 567/126
3. Likewise, for the 2nd fraction, since 42 × 3 = 126,
   35/42 = 35 × 3/42 × 3 = 105/126
4. Add the two like fractions:
   567/126 + 105/126 = 567 + 105/126 = 672/126
5. 672/126 simplified gives 16/3
6. So, 81/18 + 35/42 = 16/3
   In mixed form: 51/3

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