Answers

Add 7/81 and 15/10

1^st number: 7/81, 2^nd number: 1 5/10

7/81 + 15/10 is 257/162.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 10 is 810
   
   Next, find the equivalent fraction of both fractional numbers with denominator 810
2. For the 1st fraction, since 81 × 10 = 810,
   7/81 = 7 × 10/81 × 10 = 70/810
3. Likewise, for the 2nd fraction, since 10 × 81 = 810,
   15/10 = 15 × 81/10 × 81 = 1215/810
4. Add the two like fractions:
   70/810 + 1215/810 = 70 + 1215/810 = 1285/810
5. 1285/810 simplified gives 257/162
6. So, 7/81 + 15/10 = 257/162
   In mixed form: 195/162

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