Answers

Add 81/45 and 18/81

1^st number: 1 36/45, 2^nd number: 18/81

81/45 + 18/81 is 91/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 45 and 81 is 405
   
   Next, find the equivalent fraction of both fractional numbers with denominator 405
2. For the 1st fraction, since 45 × 9 = 405,
   81/45 = 81 × 9/45 × 9 = 729/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   18/81 = 18 × 5/81 × 5 = 90/405
4. Add the two like fractions:
   729/405 + 90/405 = 729 + 90/405 = 819/405
5. 819/405 simplified gives 91/45
6. So, 81/45 + 18/81 = 91/45
   In mixed form: 21/45

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