Answers

Add 36/81 and 28/20

1^st number: 36/81, 2^nd number: 1 8/20

36/81 + 28/20 is 83/45.

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,
   36/81 = 36 × 20/81 × 20 = 720/1620
3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
   28/20 = 28 × 81/20 × 81 = 2268/1620
4. Add the two like fractions:
   720/1620 + 2268/1620 = 720 + 2268/1620 = 2988/1620
5. 2988/1620 simplified gives 83/45
6. So, 36/81 + 28/20 = 83/45
   In mixed form: 138/45

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