Answers

Add 20/81 and 80/45

1^st number: 20/81, 2^nd number: 1 35/45

20/81 + 80/45 is 164/81.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 45 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 81 × 5 = 405,
   20/81 = 20 × 5/81 × 5 = 100/405
3. Likewise, for the 2nd fraction, since 45 × 9 = 405,
   80/45 = 80 × 9/45 × 9 = 720/405
4. Add the two like fractions:
   100/405 + 720/405 = 100 + 720/405 = 820/405
5. 820/405 simplified gives 164/81
6. So, 20/81 + 80/45 = 164/81
   In mixed form: 22/81

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