Answers

Add 16/21 and 63/54

1^st number: 16/21, 2^nd number: 1 9/54

16/21 + 63/54 is 27/14.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 21 and 54 is 378
   
   Next, find the equivalent fraction of both fractional numbers with denominator 378
2. For the 1st fraction, since 21 × 18 = 378,
   16/21 = 16 × 18/21 × 18 = 288/378
3. Likewise, for the 2nd fraction, since 54 × 7 = 378,
   63/54 = 63 × 7/54 × 7 = 441/378
4. Add the two like fractions:
   288/378 + 441/378 = 288 + 441/378 = 729/378
5. 729/378 simplified gives 27/14
6. So, 16/21 + 63/54 = 27/14
   In mixed form: 113/14

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