Answers

Add 56/81 and 15/72

56/81 + 15/72 is 583/648.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 72 is 648
   
   Next, find the equivalent fraction of both fractional numbers with denominator 648
2. For the 1st fraction, since 81 × 8 = 648,
   56/81 = 56 × 8/81 × 8 = 448/648
3. Likewise, for the 2nd fraction, since 72 × 9 = 648,
   15/72 = 15 × 9/72 × 9 = 135/648
4. Add the two like fractions:
   448/648 + 135/648 = 448 + 135/648 = 583/648
5. So, 56/81 + 15/72 = 583/648

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