Answers

Add 8/16 and 90/81

1^st number: 8/16, 2^nd number: 1 9/81

8/16 + 90/81 is 29/18.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 16 and 81 is 1296
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1296
2. For the 1st fraction, since 16 × 81 = 1296,
   8/16 = 8 × 81/16 × 81 = 648/1296
3. Likewise, for the 2nd fraction, since 81 × 16 = 1296,
   90/81 = 90 × 16/81 × 16 = 1440/1296
4. Add the two like fractions:
   648/1296 + 1440/1296 = 648 + 1440/1296 = 2088/1296
5. 2088/1296 simplified gives 29/18
6. So, 8/16 + 90/81 = 29/18
   In mixed form: 111/18

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