Answers

Add 54/81 and 6/63

54/81 + 6/63 is 16/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 63 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 81 × 7 = 567,
   54/81 = 54 × 7/81 × 7 = 378/567
3. Likewise, for the 2nd fraction, since 63 × 9 = 567,
   6/63 = 6 × 9/63 × 9 = 54/567
4. Add the two like fractions:
   378/567 + 54/567 = 378 + 54/567 = 432/567
5. 432/567 simplified gives 16/21
6. So, 54/81 + 6/63 = 16/21

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