Answers

Add 15/81 and 54/56

15/81 + 54/56 is 869/756.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 56 is 4536
   
   Next, find the equivalent fraction of both fractional numbers with denominator 4536
2. For the 1st fraction, since 81 × 56 = 4536,
   15/81 = 15 × 56/81 × 56 = 840/4536
3. Likewise, for the 2nd fraction, since 56 × 81 = 4536,
   54/56 = 54 × 81/56 × 81 = 4374/4536
4. Add the two like fractions:
   840/4536 + 4374/4536 = 840 + 4374/4536 = 5214/4536
5. 5214/4536 simplified gives 869/756
6. So, 15/81 + 54/56 = 869/756
   In mixed form: 1113/756

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