Answers

Add 70/15 and 90/81

1^st number: 4 10/15, 2^nd number: 1 9/81

70/15 + 90/81 is 52/9.

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,
   90/81 = 90 × 5/81 × 5 = 450/405
4. Add the two like fractions:
   1890/405 + 450/405 = 1890 + 450/405 = 2340/405
5. 2340/405 simplified gives 52/9
6. So, 70/15 + 90/81 = 52/9
   In mixed form: 57/9

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