Answers

Add 16/54 and 81/20

1^st number: 16/54, 2^nd number: 4 1/20

16/54 + 81/20 is 2347/540.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 54 and 20 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 54 × 10 = 540,
   16/54 = 16 × 10/54 × 10 = 160/540
3. Likewise, for the 2nd fraction, since 20 × 27 = 540,
   81/20 = 81 × 27/20 × 27 = 2187/540
4. Add the two like fractions:
   160/540 + 2187/540 = 160 + 2187/540 = 2347/540
5. So, 16/54 + 81/20 = 2347/540
   In mixed form: 4187/540

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