Answers

Add 7/81 and 42/56

7/81 + 42/56 is 271/324.

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,
   7/81 = 7 × 56/81 × 56 = 392/4536
3. Likewise, for the 2nd fraction, since 56 × 81 = 4536,
   42/56 = 42 × 81/56 × 81 = 3402/4536
4. Add the two like fractions:
   392/4536 + 3402/4536 = 392 + 3402/4536 = 3794/4536
5. 3794/4536 simplified gives 271/324
6. So, 7/81 + 42/56 = 271/324

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