Answers

Add 20/10 and 6/81

1^st number: 2 0/10, 2^nd number: 6/81

20/10 + 6/81 is 56/27.

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,
   20/10 = 20 × 81/10 × 81 = 1620/810
3. Likewise, for the 2nd fraction, since 81 × 10 = 810,
   6/81 = 6 × 10/81 × 10 = 60/810
4. Add the two like fractions:
   1620/810 + 60/810 = 1620 + 60/810 = 1680/810
5. 1680/810 simplified gives 56/27
6. So, 20/10 + 6/81 = 56/27
   In mixed form: 22/27

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