Answers

Add 56/45 and 3/81

1^st number: 1 11/45, 2^nd number: 3/81

56/45 + 3/81 is 173/135.

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,
   56/45 = 56 × 9/45 × 9 = 504/405
3. Likewise, for the 2nd fraction, since 81 × 5 = 405,
   3/81 = 3 × 5/81 × 5 = 15/405
4. Add the two like fractions:
   504/405 + 15/405 = 504 + 15/405 = 519/405
5. 519/405 simplified gives 173/135
6. So, 56/45 + 3/81 = 173/135
   In mixed form: 138/135

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