Answers

Add 20/81 and 15/49

20/81 + 15/49 is 2195/3969.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 49 is 3969
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3969
2. For the 1st fraction, since 81 × 49 = 3969,
   20/81 = 20 × 49/81 × 49 = 980/3969
3. Likewise, for the 2nd fraction, since 49 × 81 = 3969,
   15/49 = 15 × 81/49 × 81 = 1215/3969
4. Add the two like fractions:
   980/3969 + 1215/3969 = 980 + 1215/3969 = 2195/3969
5. So, 20/81 + 15/49 = 2195/3969

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