Answers

Add 25/81 and 7/70

25/81 + 7/70 is 331/810.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 70 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 81 × 70 = 5670,
   25/81 = 25 × 70/81 × 70 = 1750/5670
3. Likewise, for the 2nd fraction, since 70 × 81 = 5670,
   7/70 = 7 × 81/70 × 81 = 567/5670
4. Add the two like fractions:
   1750/5670 + 567/5670 = 1750 + 567/5670 = 2317/5670
5. 2317/5670 simplified gives 331/810
6. So, 25/81 + 7/70 = 331/810

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