Answers

Add 20/9 and 27/21

1^st number: 2 2/9, 2^nd number: 1 6/21

20/9 + 27/21 is 221/63.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 9 and 21 is 63
   
   Next, find the equivalent fraction of both fractional numbers with denominator 63
2. For the 1st fraction, since 9 × 7 = 63,
   20/9 = 20 × 7/9 × 7 = 140/63
3. Likewise, for the 2nd fraction, since 21 × 3 = 63,
   27/21 = 27 × 3/21 × 3 = 81/63
4. Add the two like fractions:
   140/63 + 81/63 = 140 + 81/63 = 221/63
5. So, 20/9 + 27/21 = 221/63
   In mixed form: 332/63

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