Answers

Add 70/28 and 5/81

1^st number: 2 14/28, 2^nd number: 5/81

70/28 + 5/81 is 415/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 28 and 81 is 2268
   
   Next, find the equivalent fraction of both fractional numbers with denominator 2268
2. For the 1st fraction, since 28 × 81 = 2268,
   70/28 = 70 × 81/28 × 81 = 5670/2268
3. Likewise, for the 2nd fraction, since 81 × 28 = 2268,
   5/81 = 5 × 28/81 × 28 = 140/2268
4. Add the two like fractions:
   5670/2268 + 140/2268 = 5670 + 140/2268 = 5810/2268
5. 5810/2268 simplified gives 415/162
6. So, 70/28 + 5/81 = 415/162
   In mixed form: 291/162

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