Answers

Add 15/81 and 42/98

15/81 + 42/98 is 116/189.

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,
   15/81 = 15 × 98/81 × 98 = 1470/7938
3. Likewise, for the 2nd fraction, since 98 × 81 = 7938,
   42/98 = 42 × 81/98 × 81 = 3402/7938
4. Add the two like fractions:
   1470/7938 + 3402/7938 = 1470 + 3402/7938 = 4872/7938
5. 4872/7938 simplified gives 116/189
6. So, 15/81 + 42/98 = 116/189

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