Answers

Add 21/4 and 16/27

1^st number: 5 1/4, 2^nd number: 16/27

21/4 + 16/27 is 631/108.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 4 and 27 is 108
   
   Next, find the equivalent fraction of both fractional numbers with denominator 108
2. For the 1st fraction, since 4 × 27 = 108,
   21/4 = 21 × 27/4 × 27 = 567/108
3. Likewise, for the 2nd fraction, since 27 × 4 = 108,
   16/27 = 16 × 4/27 × 4 = 64/108
4. Add the two like fractions:
   567/108 + 64/108 = 567 + 64/108 = 631/108
5. So, 21/4 + 16/27 = 631/108
   In mixed form: 591/108

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