Answers

Add 12/28 and 81/42

1^st number: 12/28, 2^nd number: 1 39/42

12/28 + 81/42 is 33/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 42 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 28 × 3 = 84,
   12/28 = 12 × 3/28 × 3 = 36/84
3. Likewise, for the 2nd fraction, since 42 × 2 = 84,
   81/42 = 81 × 2/42 × 2 = 162/84
4. Add the two like fractions:
   36/84 + 162/84 = 36 + 162/84 = 198/84
5. 198/84 simplified gives 33/14
6. So, 12/28 + 81/42 = 33/14
   In mixed form: 25/14

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