Answers

Add 90/81 and 8/15

1^st number: 1 9/81, 2^nd number: 8/15

90/81 + 8/15 is 74/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 15 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 81 × 5 = 405,
   90/81 = 90 × 5/81 × 5 = 450/405
3. Likewise, for the 2nd fraction, since 15 × 27 = 405,
   8/15 = 8 × 27/15 × 27 = 216/405
4. Add the two like fractions:
   450/405 + 216/405 = 450 + 216/405 = 666/405
5. 666/405 simplified gives 74/45
6. So, 90/81 + 8/15 = 74/45
   In mixed form: 129/45

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