Answers

Add 12/63 and 27/81

12/63 + 27/81 is 11/21.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 63 and 81 is 567
   
   Next, find the equivalent fraction of both fractional numbers with denominator 567
2. For the 1st fraction, since 63 × 9 = 567,
   12/63 = 12 × 9/63 × 9 = 108/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   27/81 = 27 × 7/81 × 7 = 189/567
4. Add the two like fractions:
   108/567 + 189/567 = 108 + 189/567 = 297/567
5. 297/567 simplified gives 11/21
6. So, 12/63 + 27/81 = 11/21

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