Answers

Add 81/21 and 2/27

1^st number: 3 18/21, 2^nd number: 2/27

81/21 + 2/27 is 743/189.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 27 is 189
   
   Next, find the equivalent fraction of both fractional numbers with denominator 189
2. For the 1st fraction, since 21 × 9 = 189,
   81/21 = 81 × 9/21 × 9 = 729/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   2/27 = 2 × 7/27 × 7 = 14/189
4. Add the two like fractions:
   729/189 + 14/189 = 729 + 14/189 = 743/189
5. So, 81/21 + 2/27 = 743/189
   In mixed form: 3176/189

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