Answers

Add 72/56 and 20/81

1^st number: 1 16/56, 2^nd number: 20/81

72/56 + 20/81 is 869/567.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 56 and 81 is 4536
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4536
2. For the 1st fraction, since 56 × 81 = 4536,
   72/56 = 72 × 81/56 × 81 = 5832/4536
3. Likewise, for the 2nd fraction, since 81 × 56 = 4536,
   20/81 = 20 × 56/81 × 56 = 1120/4536
4. Add the two like fractions:
   5832/4536 + 1120/4536 = 5832 + 1120/4536 = 6952/4536
5. 6952/4536 simplified gives 869/567
6. So, 72/56 + 20/81 = 869/567
   In mixed form: 1302/567

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