Answers

Add 48/21 and 27/81

1^st number: 2 6/21, 2^nd number: 27/81

48/21 + 27/81 is 55/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 21 × 27 = 567,
   48/21 = 48 × 27/21 × 27 = 1296/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   27/81 = 27 × 7/81 × 7 = 189/567
4. Add the two like fractions:
   1296/567 + 189/567 = 1296 + 189/567 = 1485/567
5. 1485/567 simplified gives 55/21
6. So, 48/21 + 27/81 = 55/21
   In mixed form: 213/21

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