Answers

Add 8/63 and 42/81

8/63 + 42/81 is 122/189.

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,
   8/63 = 8 × 9/63 × 9 = 72/567
3. Likewise, for the 2nd fraction, since 81 × 7 = 567,
   42/81 = 42 × 7/81 × 7 = 294/567
4. Add the two like fractions:
   72/567 + 294/567 = 72 + 294/567 = 366/567
5. 366/567 simplified gives 122/189
6. So, 8/63 + 42/81 = 122/189

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