Answers

Add 8/70 and 28/81

8/70 + 28/81 is 1304/2835.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 70 and 81 is 5670
   
   Next, find the equivalent fraction of both fractional numbers with denominator 5670
2. For the 1st fraction, since 70 × 81 = 5670,
   8/70 = 8 × 81/70 × 81 = 648/5670
3. Likewise, for the 2nd fraction, since 81 × 70 = 5670,
   28/81 = 28 × 70/81 × 70 = 1960/5670
4. Add the two like fractions:
   648/5670 + 1960/5670 = 648 + 1960/5670 = 2608/5670
5. 2608/5670 simplified gives 1304/2835
6. So, 8/70 + 28/81 = 1304/2835

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