Answers

Add 18/81 and 10/45

18/81 + 10/45 is 4/9.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 45 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 81 × 5 = 405,
   18/81 = 18 × 5/81 × 5 = 90/405
3. Likewise, for the 2nd fraction, since 45 × 9 = 405,
   10/45 = 10 × 9/45 × 9 = 90/405
4. Add the two like fractions:
   90/405 + 90/405 = 90 + 90/405 = 180/405
5. 180/405 simplified gives 4/9
6. So, 18/81 + 10/45 = 4/9

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