Answers

Add 54/81 and 42/20

1^st number: 54/81, 2^nd number: 2 2/20

54/81 + 42/20 is 83/30.

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,
   54/81 = 54 × 20/81 × 20 = 1080/1620
3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
   42/20 = 42 × 81/20 × 81 = 3402/1620
4. Add the two like fractions:
   1080/1620 + 3402/1620 = 1080 + 3402/1620 = 4482/1620
5. 4482/1620 simplified gives 83/30
6. So, 54/81 + 42/20 = 83/30
   In mixed form: 223/30

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