Answers

Add 70/15 and 6/81

1^st number: 4 10/15, 2^nd number: 6/81

70/15 + 6/81 is 128/27.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 15 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 15 × 27 = 405,
   70/15 = 70 × 27/15 × 27 = 1890/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   6/81 = 6 × 5/81 × 5 = 30/405
4. Add the two like fractions:
   1890/405 + 30/405 = 1890 + 30/405 = 1920/405
5. 1920/405 simplified gives 128/27
6. So, 70/15 + 6/81 = 128/27
   In mixed form: 420/27

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