Answers

Add 81/12 and 35/42

1^st number: 6 9/12, 2^nd number: 35/42

81/12 + 35/42 is 91/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 12 × 7 = 84,
   81/12 = 81 × 7/12 × 7 = 567/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   35/42 = 35 × 2/42 × 2 = 70/84
4. Add the two like fractions:
   567/84 + 70/84 = 567 + 70/84 = 637/84
5. 637/84 simplified gives 91/12
6. So, 81/12 + 35/42 = 91/12
   In mixed form: 77/12

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