Answers

Add 8/30 and 90/81

1^st number: 8/30, 2^nd number: 1 9/81

8/30 + 90/81 is 62/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 30 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 30 × 27 = 810,
   8/30 = 8 × 27/30 × 27 = 216/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   90/81 = 90 × 10/81 × 10 = 900/810
4. Add the two like fractions:
   216/810 + 900/810 = 216 + 900/810 = 1116/810
5. 1116/810 simplified gives 62/45
6. So, 8/30 + 90/81 = 62/45
   In mixed form: 117/45

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