Answers

Add 42/21 and 36/81

1^st number: 2 0/21, 2^nd number: 36/81

42/21 + 36/81 is 22/9.

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,
   42/21 = 42 × 27/21 × 27 = 1134/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   36/81 = 36 × 7/81 × 7 = 252/567
4. Add the two like fractions:
   1134/567 + 252/567 = 1134 + 252/567 = 1386/567
5. 1386/567 simplified gives 22/9
6. So, 42/21 + 36/81 = 22/9
   In mixed form: 24/9

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