Answers

Add 18/81 and 56/40

1^st number: 18/81, 2^nd number: 1 16/40

18/81 + 56/40 is 73/45.

Steps for adding fractions

1. Find the least common denominator or LCM of the two denominators:
   LCM of 81 and 40 is 3240
   
   Next, find the equivalent fraction of both fractional numbers with denominator 3240
2. For the 1st fraction, since 81 × 40 = 3240,
   18/81 = 18 × 40/81 × 40 = 720/3240
3. Likewise, for the 2nd fraction, since 40 × 81 = 3240,
   56/40 = 56 × 81/40 × 81 = 4536/3240
4. Add the two like fractions:
   720/3240 + 4536/3240 = 720 + 4536/3240 = 5256/3240
5. 5256/3240 simplified gives 73/45
6. So, 18/81 + 56/40 = 73/45
   In mixed form: 128/45

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