Answers

Add 81/12 and 42/35

1^st number: 6 9/12, 2^nd number: 1 7/35

81/12 + 42/35 is 159/20.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 12 and 35 is 420
   
   Next, find the equivalent fraction of both fractional numbers with denominator 420
2. For the 1st fraction, since 12 × 35 = 420,
   81/12 = 81 × 35/12 × 35 = 2835/420
3. Likewise, for the 2nd fraction, since 35 × 12 = 420,
   42/35 = 42 × 12/35 × 12 = 504/420
4. Add the two like fractions:
   2835/420 + 504/420 = 2835 + 504/420 = 3339/420
5. 3339/420 simplified gives 159/20
6. So, 81/12 + 42/35 = 159/20
   In mixed form: 719/20

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