Answers

Add 24/81 and 27/20

1^st number: 24/81, 2^nd number: 1 7/20

24/81 + 27/20 is 889/540.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 20 is 1620
   
   Next, find the equivalent fraction of both fractional numbers with denominator 1620
2. For the 1st fraction, since 81 × 20 = 1620,
   24/81 = 24 × 20/81 × 20 = 480/1620
3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
   27/20 = 27 × 81/20 × 81 = 2187/1620
4. Add the two like fractions:
   480/1620 + 2187/1620 = 480 + 2187/1620 = 2667/1620
5. 2667/1620 simplified gives 889/540
6. So, 24/81 + 27/20 = 889/540
   In mixed form: 1349/540

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