Answers

Add 15/10 and 84/81

1^st number: 1 5/10, 2^nd number: 1 3/81

15/10 + 84/81 is 137/54.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 10 and 81 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 10 × 81 = 810,
   15/10 = 15 × 81/10 × 81 = 1215/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   84/81 = 84 × 10/81 × 10 = 840/810
4. Add the two like fractions:
   1215/810 + 840/810 = 1215 + 840/810 = 2055/810
5. 2055/810 simplified gives 137/54
6. So, 15/10 + 84/81 = 137/54
   In mixed form: 229/54

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