Answers

Add 40/84 and 56/81

40/84 + 56/81 is 662/567.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 84 and 81 is 2268
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2268
2. For the 1st fraction, since 84 × 27 = 2268,
   40/84 = 40 × 27/84 × 27 = 1080/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   56/81 = 56 × 28/81 × 28 = 1568/2268
4. Add the two like fractions:
   1080/2268 + 1568/2268 = 1080 + 1568/2268 = 2648/2268
5. 2648/2268 simplified gives 662/567
6. So, 40/84 + 56/81 = 662/567
   In mixed form: 195/567

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