Answers

Add 90/81 and 15/30

1^st number: 1 9/81, 2^nd number: 15/30

90/81 + 15/30 is 29/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 30 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   90/81 = 90 × 10/81 × 10 = 900/810
3. Likewise, for the 2nd fraction, since 30 × 27 = 810,
   15/30 = 15 × 27/30 × 27 = 405/810
4. Add the two like fractions:
   900/810 + 405/810 = 900 + 405/810 = 1305/810
5. 1305/810 simplified gives 29/18
6. So, 90/81 + 15/30 = 29/18
   In mixed form: 111/18

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