Answers

Add 49/21 and 81/4

1^st number: 2 7/21, 2^nd number: 20 1/4

49/21 + 81/4 is 271/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 4 is 84
   
   Next, find the equivalent fraction of both fractional numbers with denominator 84
2. For the 1st fraction, since 21 × 4 = 84,
   49/21 = 49 × 4/21 × 4 = 196/84
3. Likewise, for the 2nd fraction, since 4 × 21 = 84,
   81/4 = 81 × 21/4 × 21 = 1701/84
4. Add the two like fractions:
   196/84 + 1701/84 = 196 + 1701/84 = 1897/84
5. 1897/84 simplified gives 271/12
6. So, 49/21 + 81/4 = 271/12
   In mixed form: 227/12

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