Answers

Add 15/81 and 5/70

15/81 + 5/70 is 97/378.

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,
   15/81 = 15 × 70/81 × 70 = 1050/5670
3. Likewise, for the 2nd fraction, since 70 × 81 = 5670,
   5/70 = 5 × 81/70 × 81 = 405/5670
4. Add the two like fractions:
   1050/5670 + 405/5670 = 1050 + 405/5670 = 1455/5670
5. 1455/5670 simplified gives 97/378
6. So, 15/81 + 5/70 = 97/378

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