Answers

Add 90/81 and 60/20

1^st number: 1 9/81, 2^nd number: 3 0/20

90/81 + 60/20 is 37/9.

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,
   90/81 = 90 × 20/81 × 20 = 1800/1620
3. Likewise, for the 2nd fraction, since 20 × 81 = 1620,
   60/20 = 60 × 81/20 × 81 = 4860/1620
4. Add the two like fractions:
   1800/1620 + 4860/1620 = 1800 + 4860/1620 = 6660/1620
5. 6660/1620 simplified gives 37/9
6. So, 90/81 + 60/20 = 37/9
   In mixed form: 41/9

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