Answers

Add 6/81 and 84/20

1^st number: 6/81, 2^nd number: 4 4/20

6/81 + 84/20 is 577/135.

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,
   6/81 = 6 × 20/81 × 20 = 120/1620
3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
   84/20 = 84 × 81/20 × 81 = 6804/1620
4. Add the two like fractions:
   120/1620 + 6804/1620 = 120 + 6804/1620 = 6924/1620
5. 6924/1620 simplified gives 577/135
6. So, 6/81 + 84/20 = 577/135
   In mixed form: 437/135

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