Answers

Add 6/15 and 42/81

6/15 + 42/81 is 124/135.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 15 × 27 = 405,
   6/15 = 6 × 27/15 × 27 = 162/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   42/81 = 42 × 5/81 × 5 = 210/405
4. Add the two like fractions:
   162/405 + 210/405 = 162 + 210/405 = 372/405
5. 372/405 simplified gives 124/135
6. So, 6/15 + 42/81 = 124/135

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