Answers

Add 7/81 and 7/63

7/81 + 7/63 is 16/81.

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,
   7/81 = 7 × 7/81 × 7 = 49/567
3. Likewise, for the 2nd fraction, since 63 × 9 = 567,
   7/63 = 7 × 9/63 × 9 = 63/567
4. Add the two like fractions:
   49/567 + 63/567 = 49 + 63/567 = 112/567
5. 112/567 simplified gives 16/81
6. So, 7/81 + 7/63 = 16/81

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