Answers

Add 15/20 and 72/54

1^st number: 15/20, 2^nd number: 1 18/54

15/20 + 72/54 is 25/12.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 20 and 54 is 540
   
   Next, find the equivalent fraction of both fractional numbers with denominator 540
2. For the 1st fraction, since 20 × 27 = 540,
   15/20 = 15 × 27/20 × 27 = 405/540
3. Likewise, for the 2nd fraction, since 54 × 10 = 540,
   72/54 = 72 × 10/54 × 10 = 720/540
4. Add the two like fractions:
   405/540 + 720/540 = 405 + 720/540 = 1125/540
5. 1125/540 simplified gives 25/12
6. So, 15/20 + 72/54 = 25/12
   In mixed form: 21/12

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