Answers

Add 10/81 and 42/63

10/81 + 42/63 is 64/81.

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,
   10/81 = 10 × 7/81 × 7 = 70/567
3. Likewise, for the 2nd fraction, since 63 × 9 = 567,
   42/63 = 42 × 9/63 × 9 = 378/567
4. Add the two like fractions:
   70/567 + 378/567 = 70 + 378/567 = 448/567
5. 448/567 simplified gives 64/81
6. So, 10/81 + 42/63 = 64/81

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