Answers

Add 72/21 and 8/27

1^st number: 3 9/21, 2^nd number: 8/27

72/21 + 8/27 is 704/189.

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,
   72/21 = 72 × 9/21 × 9 = 648/189
3. Likewise, for the 2nd fraction, since 27 × 7 = 189,
   8/27 = 8 × 7/27 × 7 = 56/189
4. Add the two like fractions:
   648/189 + 56/189 = 648 + 56/189 = 704/189
5. So, 72/21 + 8/27 = 704/189
   In mixed form: 3137/189

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