Answers

Add 16/81 and 90/98

16/81 + 90/98 is 4429/3969.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 98 is 7938
   
   Next, find the equivalent fraction of both fractional numbers with denominator 7938
2. For the 1st fraction, since 81 × 98 = 7938,
   16/81 = 16 × 98/81 × 98 = 1568/7938
3. Likewise, for the 2nd fraction, since 98 × 81 = 7938,
   90/98 = 90 × 81/98 × 81 = 7290/7938
4. Add the two like fractions:
   1568/7938 + 7290/7938 = 1568 + 7290/7938 = 8858/7938
5. 8858/7938 simplified gives 4429/3969
6. So, 16/81 + 90/98 = 4429/3969
   In mixed form: 1460/3969

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