Answers

Add 14/45 and 21/81

14/45 + 21/81 is 77/135.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 45 × 9 = 405,
   14/45 = 14 × 9/45 × 9 = 126/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   21/81 = 21 × 5/81 × 5 = 105/405
4. Add the two like fractions:
   126/405 + 105/405 = 126 + 105/405 = 231/405
5. 231/405 simplified gives 77/135
6. So, 14/45 + 21/81 = 77/135

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