Answers

Add 70/98 and 20/81

70/98 + 20/81 is 545/567.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 98 and 81 is 7938
   
   Next, find the equivalent fraction of both fractional numbers with denominator 7938
2. For the 1st fraction, since 98 × 81 = 7938,
   70/98 = 70 × 81/98 × 81 = 5670/7938
3. Likewise, for the 2nd fraction, since 81 × 98 = 7938,
   20/81 = 20 × 98/81 × 98 = 1960/7938
4. Add the two like fractions:
   5670/7938 + 1960/7938 = 5670 + 1960/7938 = 7630/7938
5. 7630/7938 simplified gives 545/567
6. So, 70/98 + 20/81 = 545/567

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